Sno-Seal makes a spray on product called U-V-Killer. It is a pump spray applied liquid that deadens the UV brightness of anything that it is applied to. I have used it for years, and it does work. I have sprayed it on my white camo and you can see in the folds or creases that I didn't smooth out when applying it where I have missed. You can check it with a black light to see how the clothes no longer floures after it has dried. It comes in an 18 ounce bottle for about $15.