Late to the party, as usual - but, yeah, I like plain paint schemes, too.
Now, I like ATSF, a lot, but my favorite scheme tends to be the black one, with silver lettering, a tender and a smokestack.
I have never understood the fascination with the "Warbonnet". It's OK, I guess, but
a bit gaudy, and as a kid I would have gone for the NYC F-3's: serious-looking
diesels. I got a 2055 (Santa Fe style!) Hudson instead, and that's just fine.