private static Color lighter(Color col) {
int hsl[] = new int[3];
Utils.rgb2hsl(col.getRed(), col.getGreen(), col.getBlue(), hsl);
hsl[1] = Math.round(0.7f * hsl[1]);
hsl[2] = 100;
int rgb[] = Utils.hsl2rgb(hsl);
return new Color(rgb[0], rgb[1], rgb[2]);
}
