@Nullable
        @Override
        protected Color getUnfocusedBorderColor(@NotNull ColorButtonBase button) {
          if (StartupUiUtil.isUnderDarcula()) return JBColor.GRAY;
          return super.getUnfocusedBorderColor(button);
        }
@Nullable
        @Override
        protected Color getUnfocusedBorderColor(@NotNull ColorButtonBase button)