dark theme for game loading

src/css/common.scss

@@ -417,6 +417,10 @@ canvas {
         display: inline-block;
         vertical-align: middle;
     }
+
+    @include DarkThemeOverride {
+        color: #fff;
+    }
 }
 
 .prefab_LoadingTextWithAnimDelayed {

src/css/states/ingame.scss

@@ -28,4 +28,10 @@
         right: 0;
         bottom: 0;
     }
+
+    @include DarkThemeOverride {
+        .gameLoadingOverlay {
+            background: #56565c;
+        }
+    }
 }