Thought I'd give another good review for this great paint. Just got the Scullin disc drivers painted on my Lionel #5444 J3a Hudson. From the factory they appear to be raw metal and thus a very gray finish, which just doesn't look right since NYC Hudson drivers are always black on non-streamlined locomotives. The sheen of the primer itself is a very close match to the locomotive. Extremely happy with the results and I've also included a photo of the same paint on my Super 700E drivers.
The Weather Channel reports 61 degrees F with 78% humidity at the time of spraying outside.