Could still try to find a WK30… (Nope, ain’t selling mine.)
Pricier and lots bigger would be a dive-light, the GD11 (white/red/blue/UV).
There were/are the Trustfire Minix keychain lights that did white+UV in 2 color bodies, and I think white+red in 2 other color bodies.
I got a white+UV in a purple body, but don’t recall the other body colors or which was which.