public static String toRGBHexString(GenericColor c) {
int rgb = c.getRGB();
if (rgb == 0) return "000000";
String r = "00" + Integer.toHexString((rgb >> 16) & 0xFF);
r = r.substring(r.length() - 2);
String g = "00" + Integer.toHexString((rgb >> 8) & 0xFF);
g = g.substring(g.length() - 2);
String b = "00" + Integer.toHexString(rgb & 0xFF);
b = b.substring(b.length() - 2);
return r + g + b;
}
public static String toCSSString(GenericColor c) {
int opacity = c.getOpacity255();
if (opacity == 255) return "#" + toRGBHexString(c);
int rgb = c.getRGB();
return "rgba("
+ ((rgb >> 16) & 0xFF)
+ ","
+ ((rgb >> 8) & 0xff)
+ ","
+ (rgb & 0xff)
+ ","
+ opacity / 255f
+ ")";
}