Changes tint color to Delta purple

AltStore/Base.lproj/Main.storyboard

@@ -118,7 +118,6 @@
                                                                 <constraint firstAttribute="height" constant="30" id="71g-sg-TqR"/>
                                                             </constraints>
                                                             <fontDescription key="fontDescription" type="system" weight="semibold" pointSize="15"/>
-                                                            <color key="tintColor" red="0.0" green="0.47843137250000001" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
                                                             <state key="normal" title="Download"/>
                                                         </button>
                                                     </subviews>
@@ -393,4 +392,5 @@
     <inferredMetricsTieBreakers>
         <segue reference="F38-66-skN"/>
     </inferredMetricsTieBreakers>
+    <color key="tintColor" name="Purple"/>
 </document>

AltStore/Extensions/UIColor+AltStore.swift

@@ -0,0 +1,14 @@
+//
+//  UIColor+AltStore.swift
+//  AltStore
+//
+//  Created by Riley Testut on 5/9/19.
+//  Copyright © 2019 Riley Testut. All rights reserved.
+//
+
+import UIKit
+
+extension UIColor
+{
+    static let altPurple = UIColor(named: "Purple")!
+}

AltStore/Resources/Assets.xcassets/Colors/Contents.json

@@ -0,0 +1,6 @@
+{
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

AltStore/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" : "0.545",
+          "alpha" : "1.000",
+          "blue" : "0.969",
+          "green" : "0.157"
+        }
+      }
+    }
+  ]
+}