TM Terry - The black/yellow GP30 may be a WBB; I have one - not mine - sitting in my kitchen right now (I have been working on it). Beautiful, for a GM diesel.
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1 - The ACL (and later SCL) black/yellow paint scheme has to be one of the all-time most
attractive diesel paint jobs ever. Simple, striking, straight and crisp. No swoops.
If anyone ever produces an ACL EMD E-unit - preferably the E-6! - in that scheme (even a nice
MTH RK E-3/6), I will be all over it. I have no connection to the ACL, but if C. Sam can
run GM&O, I can run ACL!
2 - I dislike the color purple, and its cousins pink, violet, etc, in general. Always have.
So, the ACL also has one of my LEAST favorite paint schemes in that odd look. Also,
from a paint engineering point of view, I have been told by experts that purple, at least
back in the day, was/is one of the least durable colors available. It tends to turn pink,
which just makes things worse.
Strange extremes.