My camo's are Dickies work clothes in grey. I hung them up on hangers outside and used some light grey, white, and black paint. I applied the paint by using a brush dipped into the paint and then slung onto the pants and shirt. It blends in well with granite and if just sitting by trees etc, you appear to be a granite boulder. These have worked well for many years and this year may be the last for them, they are just about worn out. You can bet that I will be looking to make another pair before next year.
No such thing as a stupid question. What is stupid is not asking it.