Has anyone ever had issues with Rust-oleum Spray Bed Liner? I sprayed two rims yesterday with 1 can and it turned out near perfect. Nice and black. Only spots that were an issue were that i got to close and it started to run a little bit no biggie. I started the next two rims with a brand new can and when i was done i noticed that it was not black its like a dark grey and that the rims dont match. really annoying any suggestions? Also i used playing cards and newspaper to mask the tires anyone have any tips and or tricks since i will have to redo my rims?