diff --git a/Sticky Links.xcodeproj/project.pbxproj b/Sticky Links.xcodeproj/project.pbxproj
index c4356f6..ad1108b 100644
--- a/Sticky Links.xcodeproj/project.pbxproj	
+++ b/Sticky Links.xcodeproj/project.pbxproj	
@@ -7,6 +7,7 @@
 	objects = {
 
 /* Begin PBXBuildFile section */
+		18FA0757270DED8100AEC7D8 /* Colors.swift in Sources */ = {isa = PBXBuildFile; fileRef = 18FA0756270DED8100AEC7D8 /* Colors.swift */; };
 		B26DCA1C27062C0A0088032C /* README.md in Resources */ = {isa = PBXBuildFile; fileRef = B26DCA1B27062C0A0088032C /* README.md */; };
 		B290640827040F81004250FA /* AppDelegate.swift in Sources */ = {isa = PBXBuildFile; fileRef = B290640727040F81004250FA /* AppDelegate.swift */; };
 		B290640A27040F81004250FA /* SceneDelegate.swift in Sources */ = {isa = PBXBuildFile; fileRef = B290640927040F81004250FA /* SceneDelegate.swift */; };
@@ -20,6 +21,7 @@
 /* End PBXBuildFile section */
 
 /* Begin PBXFileReference section */
+		18FA0756270DED8100AEC7D8 /* Colors.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Colors.swift; sourceTree = "<group>"; };
 		B26DCA1B27062C0A0088032C /* README.md */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = net.daringfireball.markdown; path = README.md; sourceTree = "<group>"; };
 		B290640427040F81004250FA /* Sticky Links.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = "Sticky Links.app"; sourceTree = BUILT_PRODUCTS_DIR; };
 		B290640727040F81004250FA /* AppDelegate.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AppDelegate.swift; sourceTree = "<group>"; };
@@ -81,6 +83,7 @@
 			isa = PBXGroup;
 			children = (
 				B290642627041685004250FA /* CategoryViewController.swift */,
+				18FA0756270DED8100AEC7D8 /* Colors.swift */,
 				B290640B27040F81004250FA /* LinksViewController.swift */,
 				B29064242704152A004250FA /* WebViewController.swift */,
 			);
@@ -178,6 +181,7 @@
 				B290641227040F81004250FA /* Sticky_Links.xcdatamodeld in Sources */,
 				B290640C27040F81004250FA /* LinksViewController.swift in Sources */,
 				B290640827040F81004250FA /* AppDelegate.swift in Sources */,
+				18FA0757270DED8100AEC7D8 /* Colors.swift in Sources */,
 				B29064252704152A004250FA /* WebViewController.swift in Sources */,
 				B290642727041685004250FA /* CategoryViewController.swift in Sources */,
 				B290640A27040F81004250FA /* SceneDelegate.swift in Sources */,
diff --git a/Sticky Links.xcodeproj/project.xcworkspace/xcuserdata/alleypereira.xcuserdatad/UserInterfaceState.xcuserstate b/Sticky Links.xcodeproj/project.xcworkspace/xcuserdata/alleypereira.xcuserdatad/UserInterfaceState.xcuserstate
new file mode 100644
index 0000000..3175a63
Binary files /dev/null and b/Sticky Links.xcodeproj/project.xcworkspace/xcuserdata/alleypereira.xcuserdatad/UserInterfaceState.xcuserstate differ
diff --git a/Sticky Links.xcodeproj/xcuserdata/alleypereira.xcuserdatad/xcdebugger/Breakpoints_v2.xcbkptlist b/Sticky Links.xcodeproj/xcuserdata/alleypereira.xcuserdatad/xcdebugger/Breakpoints_v2.xcbkptlist
new file mode 100644
index 0000000..52d9f09
--- /dev/null
+++ b/Sticky Links.xcodeproj/xcuserdata/alleypereira.xcuserdatad/xcdebugger/Breakpoints_v2.xcbkptlist	
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Bucket
+   uuid = "DD32DD28-DE2B-4E29-AD8A-274635042C47"
+   type = "1"
+   version = "2.0">
+</Bucket>
diff --git a/Sticky Links.xcodeproj/xcuserdata/alleypereira.xcuserdatad/xcschemes/xcschememanagement.plist b/Sticky Links.xcodeproj/xcuserdata/alleypereira.xcuserdatad/xcschemes/xcschememanagement.plist
new file mode 100644
index 0000000..b6cd563
--- /dev/null
+++ b/Sticky Links.xcodeproj/xcuserdata/alleypereira.xcuserdatad/xcschemes/xcschememanagement.plist	
@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>SchemeUserState</key>
+	<dict>
+		<key>Sticky Links.xcscheme_^#shared#^_</key>
+		<dict>
+			<key>orderHint</key>
+			<integer>0</integer>
+		</dict>
+	</dict>
+</dict>
+</plist>
diff --git a/Sticky Links/Assets.xcassets/Colors/Contents.json b/Sticky Links/Assets.xcassets/Colors/Contents.json
new file mode 100644
index 0000000..73c0059
--- /dev/null
+++ b/Sticky Links/Assets.xcassets/Colors/Contents.json	
@@ -0,0 +1,6 @@
+{
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}
diff --git a/Sticky Links/Assets.xcassets/Colors/PrimaryBackgroundColor.colorset/Contents.json b/Sticky Links/Assets.xcassets/Colors/PrimaryBackgroundColor.colorset/Contents.json
new file mode 100644
index 0000000..0dc55c1
--- /dev/null
+++ b/Sticky Links/Assets.xcassets/Colors/PrimaryBackgroundColor.colorset/Contents.json	
@@ -0,0 +1,38 @@
+{
+  "colors" : [
+    {
+      "color" : {
+        "color-space" : "display-p3",
+        "components" : {
+          "alpha" : "1.000",
+          "blue" : "0.953",
+          "green" : "0.945",
+          "red" : "0.937"
+        }
+      },
+      "idiom" : "universal"
+    },
+    {
+      "appearances" : [
+        {
+          "appearance" : "luminosity",
+          "value" : "dark"
+        }
+      ],
+      "color" : {
+        "color-space" : "display-p3",
+        "components" : {
+          "alpha" : "1.000",
+          "blue" : "0.239",
+          "green" : "0.157",
+          "red" : "0.145"
+        }
+      },
+      "idiom" : "universal"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}
diff --git a/Sticky Links/Assets.xcassets/Colors/TextColors.colorset/Contents.json b/Sticky Links/Assets.xcassets/Colors/TextColors.colorset/Contents.json
new file mode 100644
index 0000000..97fee71
--- /dev/null
+++ b/Sticky Links/Assets.xcassets/Colors/TextColors.colorset/Contents.json	
@@ -0,0 +1,38 @@
+{
+  "colors" : [
+    {
+      "color" : {
+        "color-space" : "display-p3",
+        "components" : {
+          "alpha" : "1.000",
+          "blue" : "0.000",
+          "green" : "0.000",
+          "red" : "0.000"
+        }
+      },
+      "idiom" : "universal"
+    },
+    {
+      "appearances" : [
+        {
+          "appearance" : "luminosity",
+          "value" : "dark"
+        }
+      ],
+      "color" : {
+        "color-space" : "srgb",
+        "components" : {
+          "alpha" : "1.000",
+          "blue" : "1.000",
+          "green" : "1.000",
+          "red" : "1.000"
+        }
+      },
+      "idiom" : "universal"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}
diff --git a/Sticky Links/Controllers/CategoryViewController.swift b/Sticky Links/Controllers/CategoryViewController.swift
index 25a1767..81ed36d 100644
--- a/Sticky Links/Controllers/CategoryViewController.swift	
+++ b/Sticky Links/Controllers/CategoryViewController.swift	
@@ -15,17 +15,31 @@ class CategoryViewController: UITableViewController {
     let context = (UIApplication.shared.delegate as! AppDelegate).persistentContainer.viewContext
     let request : NSFetchRequest<Category> = Category.fetchRequest()
     
-
-    
     @IBOutlet weak var searchBar: UISearchBar!
-    
+    @IBOutlet weak var outletSwitch: UISwitch!
+
+    @IBAction func darkAction(_ sender: Any) {
+        if outletSwitch.isOn {
+            view.window?.overrideUserInterfaceStyle = .dark
+            UserDefaults.standard.set(true, forKey: "DarkMode")
+        } else {
+            view.window?.overrideUserInterfaceStyle = .light
+            UserDefaults.standard.set(false, forKey: "DarkMode")
+        }
+
+    }
+
     override func viewDidLoad() {
         super.viewDidLoad()
         print(FileManager.default.urls(for: .documentDirectory, in: .userDomainMask))
         loadCategory()
+
+        outletSwitch.isOn = UserDefaults.standard.value(forKey: "DarkMode") as? Bool ?? false
     }
 }
 
+
+
 //MARK: Table View Methods
 
 extension CategoryViewController{
diff --git a/Sticky Links/Controllers/Colors.swift b/Sticky Links/Controllers/Colors.swift
new file mode 100644
index 0000000..2efdeca
--- /dev/null
+++ b/Sticky Links/Controllers/Colors.swift	
@@ -0,0 +1,14 @@
+//
+//  Colors.swift
+//  Sticky Links
+//
+//  Created by Alley Pereira on 06/10/21.
+//
+
+import UIKit
+
+extension UIColor {
+
+    static let primaryBackgroundColor: UIColor = UIColor(named: "PrimaryBackgroundColor")!
+    static let primaryTextColor: UIColor = UIColor(named: "TextColors")!
+}
diff --git a/Sticky Links/Controllers/LinksViewController.swift b/Sticky Links/Controllers/LinksViewController.swift
index 6e4b367..fb67472 100644
--- a/Sticky Links/Controllers/LinksViewController.swift	
+++ b/Sticky Links/Controllers/LinksViewController.swift	
@@ -27,6 +27,7 @@ class LinksViewController: UITableViewController {
     override func viewDidLoad() {
         super.viewDidLoad()
         // Do any additional setup after loading the view.
+        view.backgroundColor = UIColor.primaryBackgroundColor
     }
 }
 
diff --git a/Sticky Links/SceneDelegate.swift b/Sticky Links/SceneDelegate.swift
index 2622087..97a8ccb 100644
--- a/Sticky Links/SceneDelegate.swift	
+++ b/Sticky Links/SceneDelegate.swift	
@@ -17,6 +17,36 @@ class SceneDelegate: UIResponder, UIWindowSceneDelegate {
         // If using a storyboard, the `window` property will automatically be initialized and attached to the scene.
         // This delegate does not imply the connecting scene or session are new (see `application:configurationForConnectingSceneSession` instead).
         guard let _ = (scene as? UIWindowScene) else { return }
+
+        setupUserInterfaceStyle()
+    }
+
+    func setupUserInterfaceStyle() {
+
+        var darkModeIsEnabled: Bool!
+
+        if let darkModeFromUserDefault = UserDefaults.standard.value(forKey: "DarkMode") as? Bool {
+
+            darkModeIsEnabled = darkModeFromUserDefault
+
+        } else {
+
+            switch UITraitCollection.current.userInterfaceStyle {
+            case .light:
+                UserDefaults.standard.set(false, forKey: "DarkMode")
+                darkModeIsEnabled = false
+            case .dark:
+                UserDefaults.standard.set(true, forKey: "DarkMode")
+                darkModeIsEnabled = true
+            default:
+                UserDefaults.standard.set(false, forKey: "DarkMode")
+                darkModeIsEnabled = false
+            }
+
+        }
+
+        window?.overrideUserInterfaceStyle = darkModeIsEnabled ? .dark : .light
+
     }
 
     func sceneDidDisconnect(_ scene: UIScene) {
diff --git a/Sticky Links/View/Base.lproj/Main.storyboard b/Sticky Links/View/Base.lproj/Main.storyboard
index 11daf02..09385f1 100644
--- a/Sticky Links/View/Base.lproj/Main.storyboard	
+++ b/Sticky Links/View/Base.lproj/Main.storyboard	
@@ -3,6 +3,7 @@
     <device id="retina6_5" orientation="portrait" appearance="light"/>
     <dependencies>
         <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="19144"/>
+        <capability name="Named colors" minToolsVersion="9.0"/>
         <capability name="Safe area layout guides" minToolsVersion="9.0"/>
         <capability name="System colors in document resources" minToolsVersion="11.0"/>
         <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
@@ -16,9 +17,12 @@
                         <rect key="frame" x="0.0" y="0.0" width="414" height="896"/>
                         <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
                         <color key="backgroundColor" systemColor="systemBackgroundColor"/>
+                        <color key="sectionIndexColor" name="TextColors"/>
+                        <color key="sectionIndexBackgroundColor" name="PrimaryBackgroundColor"/>
                         <searchBar key="tableHeaderView" contentMode="redraw" text="" id="szk-Ml-o5U">
                             <rect key="frame" x="0.0" y="0.0" width="414" height="44"/>
                             <autoresizingMask key="autoresizingMask" widthSizable="YES" flexibleMaxY="YES"/>
+                            <color key="barTintColor" name="PrimaryBackgroundColor"/>
                             <textInputTraits key="textInputTraits"/>
                             <connections>
                                 <outlet property="delegate" destination="X4Q-zs-uTj" id="pMA-Ru-Gsd"/>
@@ -26,14 +30,14 @@
                         </searchBar>
                         <prototypes>
                             <tableViewCell clipsSubviews="YES" contentMode="scaleToFill" preservesSuperviewLayoutMargins="YES" selectionStyle="default" accessoryType="disclosureIndicator" indentationWidth="10" reuseIdentifier="LinkCell" id="Jgs-ap-hfS">
-                                <rect key="frame" x="0.0" y="88.666666030883789" width="414" height="43.666667938232422"/>
+                                <rect key="frame" x="0.0" y="88.666666030883789" width="414" height="43.333332061767578"/>
                                 <autoresizingMask key="autoresizingMask"/>
                                 <tableViewCellContentView key="contentView" opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" preservesSuperviewLayoutMargins="YES" insetsLayoutMarginsFromSafeArea="NO" tableViewCell="Jgs-ap-hfS" id="D2V-ZO-8DE">
-                                    <rect key="frame" x="0.0" y="0.0" width="384.33333333333331" height="43.666667938232422"/>
+                                    <rect key="frame" x="0.0" y="0.0" width="384.33333333333331" height="43.333332061767578"/>
                                     <autoresizingMask key="autoresizingMask"/>
                                     <subviews>
                                         <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="system" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="yif-eD-zTA" userLabel="Bookmark Link Button">
-                                            <rect key="frame" x="337.33333333333331" y="6.0000000000000018" width="41" height="31.666666666666671"/>
+                                            <rect key="frame" x="337.33333333333331" y="5.9999999999999982" width="41" height="31.333333333333329"/>
                                             <state key="normal" title="Button"/>
                                             <buttonConfiguration key="configuration" style="plain" image="bookmark" catalog="system"/>
                                             <connections>
@@ -48,6 +52,7 @@
                                         <constraint firstItem="yif-eD-zTA" firstAttribute="leading" relation="greaterThanOrEqual" secondItem="D2V-ZO-8DE" secondAttribute="leading" constant="20" symbolic="YES" id="p64-Fu-9aV"/>
                                     </constraints>
                                 </tableViewCellContentView>
+                                <color key="backgroundColor" name="PrimaryBackgroundColor"/>
                             </tableViewCell>
                         </prototypes>
                         <connections>
@@ -147,10 +152,14 @@
                     <tableView key="view" clipsSubviews="YES" contentMode="scaleToFill" alwaysBounceVertical="YES" dataMode="prototypes" style="plain" separatorStyle="default" rowHeight="-1" estimatedRowHeight="-1" sectionHeaderHeight="-1" estimatedSectionHeaderHeight="-1" sectionFooterHeight="-1" estimatedSectionFooterHeight="-1" id="Dec-hu-VuE">
                         <rect key="frame" x="0.0" y="0.0" width="414" height="896"/>
                         <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
-                        <color key="backgroundColor" systemColor="systemBackgroundColor"/>
-                        <searchBar key="tableHeaderView" contentMode="redraw" id="u6J-Vx-bbb">
+                        <color key="backgroundColor" name="PrimaryBackgroundColor"/>
+                        <color key="sectionIndexColor" name="TextColors"/>
+                        <color key="sectionIndexBackgroundColor" name="PrimaryBackgroundColor"/>
+                        <searchBar key="tableHeaderView" contentMode="redraw" text="" id="u6J-Vx-bbb">
                             <rect key="frame" x="0.0" y="0.0" width="414" height="44"/>
                             <autoresizingMask key="autoresizingMask" widthSizable="YES" flexibleMaxY="YES"/>
+                            <color key="backgroundColor" name="PrimaryBackgroundColor"/>
+                            <color key="barTintColor" name="PrimaryBackgroundColor"/>
                             <textInputTraits key="textInputTraits"/>
                         </searchBar>
                         <prototypes>
@@ -170,6 +179,7 @@
                                             </connections>
                                         </button>
                                     </subviews>
+                                    <color key="backgroundColor" name="PrimaryBackgroundColor"/>
                                     <constraints>
                                         <constraint firstAttribute="bottom" secondItem="kmH-hp-50L" secondAttribute="bottom" constant="6" id="8k1-JY-dtE"/>
                                         <constraint firstAttribute="trailing" secondItem="kmH-hp-50L" secondAttribute="trailing" constant="6" id="DE6-qN-Gpe"/>
@@ -177,6 +187,7 @@
                                         <constraint firstItem="kmH-hp-50L" firstAttribute="top" secondItem="ctg-Xh-Rr2" secondAttribute="top" constant="6" id="pRa-n9-aP9"/>
                                     </constraints>
                                 </tableViewCellContentView>
+                                <color key="backgroundColor" name="PrimaryBackgroundColor"/>
                             </tableViewCell>
                         </prototypes>
                         <connections>
@@ -186,6 +197,15 @@
                     </tableView>
                     <toolbarItems/>
                     <navigationItem key="navigationItem" title="Categories" id="GEY-ir-NSG">
+                        <barButtonItem key="leftBarButtonItem" id="VnW-Kb-Fjy">
+                            <switch key="customView" opaque="NO" contentMode="scaleToFill" horizontalHuggingPriority="750" verticalHuggingPriority="750" contentHorizontalAlignment="center" contentVerticalAlignment="center" id="NbN-7x-rF8">
+                                <rect key="frame" x="20" y="6.6666666666666679" width="51" height="31.000000000000004"/>
+                                <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
+                                <connections>
+                                    <action selector="darkAction:" destination="FBQ-C6-Eyw" eventType="valueChanged" id="SXA-I6-dfM"/>
+                                </connections>
+                            </switch>
+                        </barButtonItem>
                         <rightBarButtonItems>
                             <barButtonItem systemItem="add" id="0xG-VA-zJm">
                                 <connections>
@@ -202,6 +222,7 @@
                     </navigationItem>
                     <simulatedToolbarMetrics key="simulatedBottomBarMetrics"/>
                     <connections>
+                        <outlet property="outletSwitch" destination="NbN-7x-rF8" id="1Aa-gi-9jV"/>
                         <outlet property="searchBar" destination="u6J-Vx-bbb" id="2mU-4m-76N"/>
                         <segue destination="X4Q-zs-uTj" kind="show" identifier="CategorySegue" id="vBw-Pn-hjt"/>
                     </connections>
@@ -216,6 +237,12 @@
         <image name="bookmark" catalog="system" width="112" height="128"/>
         <image name="magnifyingglass" catalog="system" width="128" height="115"/>
         <image name="square.and.arrow.up" catalog="system" width="115" height="128"/>
+        <namedColor name="PrimaryBackgroundColor">
+            <color red="0.93699997663497925" green="0.94499999284744263" blue="0.95300000905990601" alpha="1" colorSpace="custom" customColorSpace="displayP3"/>
+        </namedColor>
+        <namedColor name="TextColors">
+            <color red="0.0" green="0.0" blue="0.0" alpha="1" colorSpace="custom" customColorSpace="displayP3"/>
+        </namedColor>
         <systemColor name="systemBackgroundColor">
             <color white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
         </systemColor>