http://www.theworldwars.net/resources/resource.php?r=camo_usaaf
I came across this excellent website as a resource for Paint schemes. Probably it has been posted up in a forum here before. If it has I apologise, if not I'm very happy to share it. it's well researched, has contemporary colour photos and a paint manufacturer comparison chart. I learnt Something about usaaf cockpit colours today😃