I found this great new filament "EONO 3D Print Glow in the Dark TPU" and I could use the same settings I used for the "SainSmart white". They look even better as this filament is see-thru which makes the LED even brighter. The 4 colors of the wristbands are super vibrant in UV light.

Only downside is that the colors from the WS2812 are now shifted in whitepoint depending on the base color of the filament.

If you fancy one check out my store