Anyway to restore firewall AC box?

[rs74]

I have a good non cracked firewall box but is a bit faded. For those who don't know I am completely rebuilding this truck and is getting paint right now. I don't want to put this faded box back on the way it is but don't want to just throw any paint on it and make it look like crap. Is there anybody that has restored there old box before putting it back on. Trying to keep away from buying a new aftermarket one. Just didn't know if there was any certain kind of paint or something I could put on it to give it a nice fresh look again.