Penumbra Keycaps on a Keycool 84 with Cherry MX Blacks (alt keycaps). Penumbra SA was inspired by the popular Solarized theme for various programming editors. This keyboard belongs to the creator of Solarized, Ethan Schoonover.
r/MechanicalKeyboards for all the Click and None of the Clack!
Skull Squadron, image by LechnerDE