help with painting bed rails
my plastic bed liner was starting to get bends in some spots and started holding water, so i took to it because i plan on putting down some bed liner this summer, well i took it off and it had been moving around and scratched up a bunch of spots so i sanded that all smooth. but in other spots there were big holes where it looked like someone had screwed something in then yanked it out. so i i bought some body filler with glass to fill the holes and the dents. well i got the bed rail all prepped up and last night i put down a few layers of primer, and today im gonna but down some black. but i have one problem, how do i fade the paint so its not like two different levels? and also will1500 to 2000 grit sandpaper be good for polishing it so it blends with the rest of the truck?