While deciding on a new keyboard, I've realized the barebones version of the WASD is $50 less then with their own keys. So if I can find a decent set of 3rd party keys that are better then the WASD keys, I come out ahead.

I hate an all-black keyboard, my current keyboard is white alphas w/ light grey modifiers (like the old IBM keyboards). For my new keyboard, I'd prefer white alpha's with either red or blue or green modifiers, similar to
these keys.
Without wanting to go overboard with $150 of keycaps, any ideas?
I see the two-color Vortex PBT keys (like I linked above), but aren't thrilled with the font/layout of the lettering.
Do you think I could piece together two sets, like this
white PBT set and this
blue ABS, or would it look or feel odd? Or maybe just do the all-blue doubleshots for everything.
Any other recommendations for good, but cost effective caps? Preferably two-tone if possible. No rainbows or other crazyness please.