standardize bg color, split bg color consistent

Classes/Settings/SettingsViewController.swift

@@ -30,7 +30,7 @@ final class SettingsViewController: UIViewController, ListAdapterDataSource {
             bottom: Styles.Sizes.tableSectionSpacing,
             right: 0
         )
-        view.backgroundColor = UIColor.groupTableViewBackground
+        view.backgroundColor = Styles.Colors.background
         return view
     }()
 

Classes/Systems/AppDelegate.swift

@@ -28,6 +28,7 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
         // initialize a webview at the start so webview startup later on isn't so slow
         let _ = UIWebView()
         flexController.configureWindow(window)
+        window?.backgroundColor = Styles.Colors.background
         rootNavigationManager.resetRootViewController(userSession: sessionManager.userSession)
         return true
     }

Classes/Systems/Feed.swift

@@ -27,7 +27,7 @@ final class Feed: NSObject, UIScrollViewDelegate {
     lazy var collectionView: UICollectionView = {
         let view = UICollectionView(frame: .zero, collectionViewLayout: UICollectionViewFlowLayout())
         view.alwaysBounceVertical = true
-        view.backgroundColor = UIColor.groupTableViewBackground
+        view.backgroundColor = Styles.Colors.background
         view.refreshControl = UIRefreshControl()
         view.refreshControl?.addTarget(self, action: #selector(Feed.onRefresh(sender:)), for: .valueChanged)
         return view

Classes/Systems/RootNavigationManager.swift

@@ -25,6 +25,7 @@ final class RootNavigationManager: GithubSessionListener {
         self.rootViewController = rootViewController
         rootViewController.delegate = splitDelegate
         rootViewController.preferredDisplayMode = .allVisible
+        rootViewController.view.backgroundColor = Styles.Colors.background
         sessionManager.addListener(listener: self)
     }
 

Classes/Views/EmptyView.swift

@@ -16,7 +16,7 @@ final class EmptyView: UIView {
     override init(frame: CGRect) {
         super.init(frame: frame)
 
-        backgroundColor = UIColor.groupTableViewBackground
+        backgroundColor = Styles.Colors.background
 
         label.backgroundColor = .clear
         label.textAlignment = .center

Classes/Views/Styles.swift

@@ -68,7 +68,7 @@ struct Styles {
 
     struct Colors {
 
-        static let background = "ffffff"
+        static let background = UIColor.groupTableViewBackground
         static let purple = "6f42c1"
 
         struct Red {

Resources/Info.plist

@@ -32,7 +32,7 @@
 		</dict>
 	</array>
 	<key>CFBundleVersion</key>
-	<string>589</string>
+	<string>594</string>
 	<key>ITSAppUsesNonExemptEncryption</key>
 	<false/>
 	<key>LSApplicationQueriesSchemes</key>