BLANK ALPHA pack is same color as alpha key in BASE CC. EDOX mods pack is same colors as mods in BASE N9. So otherwords it's the same Dolch scheme in blanks.
I think GMK pad printing is pretty decent, though it does look more consistent with the doubleshots on lighter key with dark color printing than vice versa where it is less bright. There are a few pad print keys besides the GB side printed. The B row lock keys in ODD pack are pad printed, and the print/scroll/pause keys in the F'n'A pack are too as GMK says the tooling for those is missing, apparently F row require a different legend insert than E...
Regarding windowed keys to keep the MOQ low they must be done in even number of same key and it makes it a more expensive option so I didn't offer it.