I used the rust-oleum primer inside the tail light housing before spraying the chrome paint and Eastwoods self etching primer outside. I just had picked up the rust-oleum primer on sale 2 4 1 sale and wanted to try it. It worked fine.
I just purchased the Eastwoods aluma blast on sale for 8.99 so I picked up a few cans.
Seymour makes a great aluma blast paint. You can pick it up at different locations. Summit sales for 7.95
Here was what the inside looked like prior to painting the inside.