"Rattle Can" Experts

I just got a $275 quote to have my twin hood scoops painted gloss black.

Unfortunately, I can't afford that right now (my daughter is completing her 3rd year at the University of Michigan (then on to graduate school), and my son is finishing his 1st year at Albion College).

I'm thinking I might try the "rattle can" first. Has anyone "rattle canned" their twin hood scoops? Good results? Any tips? Any favored, off the shelf, preferred products?

Thanks for your opinions. :prayer: