thanks for the positive feedback everyone.
Hmm.
Since its possible to dye acrylic cases, I guess you could dye artisan resin keycaps?
I'm sure you can, I know other people here have dyed their caps before. I remember seeing someone use iDye poly to dye their modifiers purple.
EDIT: It looks like it was nubbinator's HHKB actually. So I do not see why resin artisans would be any different.