diff --git a/Delta/Extensions/UIColor+Delta.swift b/Delta/Extensions/UIColor+Delta.swift
index 6532698..3b65db4 100644
--- a/Delta/Extensions/UIColor+Delta.swift
+++ b/Delta/Extensions/UIColor+Delta.swift
@@ -10,13 +10,6 @@ import UIKit
 
 extension UIColor
 {
-    class var deltaPurple: UIColor
-    {
-        return UIColor(red: 139.0/255.0, green: 40.0/255.0, blue: 247.0/255.0, alpha: 1.0)
-    }
-    
-    class var deltaDarkGray: UIColor
-    {
-        return UIColor(white: 0.15, alpha: 1.0)
-    }
+    static let deltaPurple = UIColor(named: "Purple")!
+    static let deltaDarkGray = UIColor(named: "DarkGray")!
 }
diff --git a/Resources/Assets.xcassets/Colors/Contents.json b/Resources/Assets.xcassets/Colors/Contents.json
new file mode 100644
index 0000000..da4a164
--- /dev/null
+++ b/Resources/Assets.xcassets/Colors/Contents.json
@@ -0,0 +1,6 @@
+{
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}
\ No newline at end of file
diff --git a/Resources/Assets.xcassets/Colors/DarkGray.colorset/Contents.json b/Resources/Assets.xcassets/Colors/DarkGray.colorset/Contents.json
new file mode 100644
index 0000000..b87ec52
--- /dev/null
+++ b/Resources/Assets.xcassets/Colors/DarkGray.colorset/Contents.json
@@ -0,0 +1,20 @@
+{
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  },
+  "colors" : [
+    {
+      "idiom" : "universal",
+      "color" : {
+        "color-space" : "srgb",
+        "components" : {
+          "red" : "0.150",
+          "alpha" : "1.000",
+          "blue" : "0.150",
+          "green" : "0.150"
+        }
+      }
+    }
+  ]
+}
\ No newline at end of file
diff --git a/Resources/Assets.xcassets/Colors/Purple.colorset/Contents.json b/Resources/Assets.xcassets/Colors/Purple.colorset/Contents.json
new file mode 100644
index 0000000..f64f0d7
--- /dev/null
+++ b/Resources/Assets.xcassets/Colors/Purple.colorset/Contents.json
@@ -0,0 +1,20 @@
+{
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  },
+  "colors" : [
+    {
+      "idiom" : "universal",
+      "color" : {
+        "color-space" : "srgb",
+        "components" : {
+          "red" : "139",
+          "alpha" : "1.000",
+          "blue" : "247",
+          "green" : "40"
+        }
+      }
+    }
+  ]
+}
\ No newline at end of file