"those color-configurable spotlights definitely emit UV at least when set to anything near blue/purple"

Nope. Blue light just happens to do well at exciting fluorescence in some materials, especially bleached and whitened ones like paper and laundry. 420nm blue light will excite red fluorescence in a ruby. 532nm green will induce BIP in calcite. Certainly no UV present in an upconverted IR laser.

It's not UV.