Can gambles quail see in colour?

I can't speak scientifically, but they see something. When I am in full camo coyote hunting they let me get within twenty yards almost always before they run or fly. When I am dressed in orange or solid colors they start running forty yards away. Like I stated before they see something or know the difference between a hunter with a rifle or shotgun. This is not occassional, this is everytime. I have nothing to back it up , but experience.