better fix for list background that works with group titles

platform/platform-impl/src/com/intellij/openapi/wm/impl/welcomeScreen/FlatWelcomeFrame.java

@@ -814,12 +814,16 @@ public class FlatWelcomeFrame extends JFrame implements IdeFrame, Disposable, Ac
          return myTextLabel;
        }
 
+       @Override
+       protected Color getBackground() {
+         return getProjectsBackground();
+       }
+
        @Override
        protected void customizeComponent(JList list, Object value, boolean isSelected) {
          if (myTextLabel != null) {
            myTextLabel.setText(getActionText(((AnAction)value)));
            myTextLabel.setIcon(((AnAction)value).getTemplatePresentation().getIcon());
-           myTextLabel.setBackground(isSelected ? UIUtil.getListBackground(true) : getProjectsBackground());
          }
        }
      }