I'm getting ready to spray the second color on my ST cab, the blue. The yellow and orange were easy to find, rustoleum right off the shelf. I didn't like any of the blues from any ready made rattle cans so I had a custom color blue made at a paint store. This is what they gave me for $24 a can! It has to be activated before use by pushing a plastic thing into the bottom of the can. I'm thinking this stuff may be very harsh. Might eat the stencils. Also How long does this last after activating? The directions on can very vague.