Color replacement shader

Shader.hx

package;

import flixel.system.FlxAssets;
import flixel.util.FlxColor;

class Shader extends FlxShader
{
    @:glFragmentSource('
        #pragma header

		uniform float uMix;
        uniform vec4 color;
		
        void main()
        {
            vec4 sample = flixel_texture2D(bitmap, openfl_TextureCoordv);
            gl_FragColor = mix(sample, color, uMix * sample.a);
        }'
    )

    public function new(color:FlxColor = 0xFFFFFFFF)
    {
        super();
        this.color.value = [color.redFloat, color.greenFloat, color.blueFloat, color.alphaFloat];
    }
}