I wanted to bring this subject up again and see if others might chime in here...
I was wondering if Concept was able to be applied over different formulations and it appears to be somewhat true. Specifically, I would like to be able to buy a smaller bottle of Testors (they have some cool colors!) or even a spray can of auto touchup paint (which I would decant into my spray gun) when I need only a small amount of a certain color... might be more cost efficient than having to buy 5 different pints of DCC and having a bunch of leftovers that would go bad...