Hmmm, yeah dyed caps might be a decent option.
I wanted to make a set with light and dark grey, light and dark green of a similar tone, a skin-like pink and a blood red. I've looked at a few sites like PMK and WASD but they only have a kind of standard set of colors and I wanted some hues that were a bit more specific than what they offer.
Guess I'll do a site search for dyeing keycaps, thanks.