I'm not sure. It would have to be a very slightly different shade of black.
I don't want blank, though. I want them to be JUST OH SO BARELY visible.
So from far, and in the dark they look blank, but if I ever happen to be looking for a key that I don't use often I could still find it.
Plus, blank is annoying when doing long strings of key combinations (vim user) without typing words between them.
I think this is the best way to do it. I don't think I'd like lasered keys, though. I don't like the roughness on your fingertips that it leaves.
Side-printed black on black would be even cooler.
By the way, I know that WASD keycaps ( the 80$ ones ) are very low quality. I hope the WASD v2 will be well made. Is it made by Costar?