My grille had been in rough shape for awhile now. I decided to paint it but wanted a clean, tough finish. I decided to use spray on bed liner and it worked amazing! I am for sure doing my rockers like this (rust starting to show) and I am considering following the line all the way across both bumpers. Feedback/suggestions are great!

 

Looks good! Mean looking!

 

You should paint over it with some other paint unless you are going for the chalky black look. The spray liner is great stuff I used it myself but without an additional layer of something a little more uv resistant it faded very very quickly.