Restore loading background color and spinner from before the TweetDeck update

Core/TweetDeckBrowser.cs

@@ -65,6 +65,7 @@ public TweetDeckBrowser(FormBrowser owner, PluginManager plugins, TweetDeckBridg
             this.browser.Location = ControlExtensions.InvisibleLocation;
 
             this.browser.SetupResourceHandler(TweetNotification.AppLogoLink, TweetNotification.AppLogoHandler);
+            this.browser.SetupResourceHandler(TwitterUtils.SpinnerLink, TwitterUtils.SpinnerHandler);
 
             owner.Controls.Add(browser);
 
@@ -127,7 +128,7 @@ private void browser_FrameLoadStart(object sender, FrameLoadStartEventArgs e){
 
         private void browser_FrameLoadEnd(object sender, FrameLoadEndEventArgs e){
             if (e.Frame.IsMain && TwitterUtils.IsTweetDeckWebsite(e.Frame)){
-                e.Frame.ExecuteJavaScriptAsync(TwitterUtils.BackgroundColorFix);
+                e.Frame.ExecuteJavaScriptAsync(TwitterUtils.OverrideScript);
 
                 UpdateProperties();
                 TweetDeckBridge.RestoreSessionData(e.Frame);

Core/Utils/TwitterUtils.cs

@@ -12,7 +12,11 @@ static class TwitterUtils{
         public const string TweetDeckURL = "https://tweetdeck.twitter.com";
 
         public static readonly Color BackgroundColor = Color.FromArgb(28, 99, 153);
-        public const string BackgroundColorFix = "let e=document.createElement('style');document.head.appendChild(e);e.innerHTML='body::before{background:#1c6399!important}'";
+
+        public static readonly IResourceHandler SpinnerHandler = ResourceHandler.FromByteArray(Properties.Resources.spinner, "image/apng");
+        public const string SpinnerLink = "https://ton.twimg.com/tduck/spinner";
+
+        public const string OverrideScript = "let e=document.createElement('style');document.head.appendChild(e);e.innerHTML='body,body::before{background:#1c6399!important}';e=document.querySelector('.js-signin-ui img');if(e)e.src='"+SpinnerLink+"'";
         
         private static readonly Lazy<Regex> RegexAccountLazy = new Lazy<Regex>(() => new Regex(@"^https?://twitter\.com/(?!signup$|tos$|privacy$)([^/]+)/?$", RegexOptions.Compiled), false);
         public static Regex RegexAccount => RegexAccountLazy.Value;

Properties/Resources.Designer.cs

@@ -99,5 +99,15 @@ internal static System.Drawing.Icon icon_tray_new {
                 return ((System.Drawing.Icon)(obj));
             }
         }
+        
+        /// <summary>
+        ///   Looks up a localized resource of type System.Byte[].
+        /// </summary>
+        internal static byte[] spinner {
+            get {
+                object obj = ResourceManager.GetObject("spinner", resourceCulture);
+                return ((byte[])(obj));
+            }
+        }
     }
 }

Properties/Resources.resx

@@ -130,4 +130,7 @@
   <data name="icon_tray_new" type="System.Resources.ResXFileRef, System.Windows.Forms">
     <value>..\Resources\icon-tray-new.ico;System.Drawing.Icon, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a</value>
   </data>
+  <data name="spinner" type="System.Resources.ResXFileRef, System.Windows.Forms">
+    <value>..\Resources\spinner.apng;System.Byte[], mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </data>
 </root>

Resources/Plugins/edit-design/theme.black.css

@@ -1,7 +1,5 @@
 html.dark{color:#e1e8ed}
 html.dark .is-inverted-dark .stream-item{background-color:#fff}
-html.dark body{background-color:#1c6399}
-html.dark body:before{background-image:radial-gradient(circle,#1c6399,#274256)}
 html.dark::selection{background:#e1e8ed;color:#111}
 html.dark a{color:#8bd}
 html.dark a:hover,html.dark a:focus,html.dark a:active{color:#8bd}

TweetDuck.csproj

@@ -356,6 +356,7 @@
     <None Include="Resources\icon-tray-new.ico" />
     <None Include="Resources\icon-tray.ico" />
     <None Include="Resources\PostBuild.ps1" />
+    <None Include="Resources\spinner.apng" />
   </ItemGroup>
   <ItemGroup>
     <Folder Include="Resources\Plugins\" />