Haxe Color abstract test

import flash.display.Bitmap;
import flash.display.BitmapData;
import flash.geom.Rectangle;
class Main {
    public function new() {
        var bit = new BitmapData(512, 512, true), cl:Color = Color.fromRGB(0x0);
        for (b in 0 ... 16) {
            for (r in 0 ... 16) {
                for (g in 0 ... 16) {
                    bit.fillRect(new Rectangle(
                        (b % 4) * 128 + r * 8,
                        Std.int(b / 4) * 128 + g * 8,
                        8, 8), cl);
                    cl.g = cl.g + 16;
                }
                cl.r = cl.r + 16;
            }
            cl.b = cl.b + 16;
        }
        flash.Lib.current.addChild(new Bitmap(bit));
    }
    @:keep static function main() new Main();
}