public static final synchronized StdImage createColorizedImage(StdImage image, Color color) {
		String name = REVERSE_MAP.get(image);
		StdImage img = null;
		if (name != null) {
			name = name + color + COLORIZED_POSTFIX;
			img = get(name);
		}
		if (img == null) {
			img = ColorFilter.createColorizedImage(image, color);
			if (img != null && name != null) {
				MAP.put(name, img);
				REVERSE_MAP.put(img, name);
			}
		}
		return img;
	}