I had a can of glow in the dark paint and I planned to paint my bros hubcaps the week before he got his rims but orally forgot.. Would've been hilarious to see though
They are definitely some sort of LED or something.
Either way, I am sure you can have them legally, as long as you only have yellow (or yellowish) lights installed.
AFAIK the law allows yellow on the sides, red rear and only white front, I am sure you have all seen those dicks with their utes lit up like Christmas trees.
they are remote control LED lights, the battery is often located in the center hub in a puck shape wired to the lights on the spokes. the whole wheel looks lit when moving at speed. slow speed looks like shitty bars on your wheels
vicpol would gladly fine your ass for having them lol