I see they do printed keycaps, is there any company that would allow having custom see-through forms in the keycaps that would support keyboard lights? E.g., in addition to QW letters that glow in the dark you could add your custom symbols that would also help you learn all the custom keybinds you've made
WASD Keyboards [1] (also in California, BTW) offers custom-printed whole sets and individual keys in OEM profile Cherry keycaps.
XVX [2] offers sets of four in Cherry profile
.. and I'm sure there are more options out there.
Then there's the whole "artisan" community, which sculpt and cast individual keycaps in various designs and shapes, more for looks and collecting than for typing on. I've seen group buys of tooling for making these.
