func CreateColorYUV(y, u, v float32) Color { return Color(C.al_color_yuv(C.float(y), C.float(u), C.float(v))) }
func Yuv(y, u, v float32) *allegro.Color { r := C.al_color_yuv(C.float(y), C.float(u), C.float(v)) return (*allegro.Color)(unsafe.Pointer(&r)) }