Render title in white at anytime (#2389)

HMCL/src/main/java/org/jackhuang/hmcl/ui/decorator/DecoratorSkin.java

@@ -141,6 +141,8 @@ public class DecoratorSkin extends SkinBase<Decorator> {
         titleContainer.setPickOnBounds(false);
         titleContainer.getStyleClass().addAll("jfx-tool-bar");
 
+        // Maybe, we can automatically identify whether the top part of the picture is light-coloured or dark when the title is transparent,
+        // and decide whether the whole top bar should be rendered in white or black. TODO
         FXUtils.onChangeAndOperate(skinnable.titleTransparentProperty(), titleTransparent -> {
             if (titleTransparent) {
                 wrapper.backgroundProperty().bind(skinnable.contentBackgroundProperty());

HMCL/src/main/resources/assets/css/root.css

@@ -553,7 +553,7 @@
 }
 
 .jfx-tool-bar.gray-background Label {
-    -fx-text-fill: BLACK;
+    /* -fx-text-fill: BLACK; */
 }
 
 .jfx-tool-bar .jfx-options-burger {