String (ColorKey key) { EditorColorsScheme colorsScheme = EditorColorsManager.getInstance().getSchemeForCurrentUITheme(); Color color = ObjectUtils.notNull(colorsScheme.getColor(key), key.getDefaultColor()); double alpha = ObjectUtils.notNull(getScrollbarAlpha(key), color.getAlpha()) / 255.0; return String.format(Locale.ROOT, "rgba(%d, %d, %d, %f)", color.getRed(), color.getGreen(), color.getBlue(), alpha); }