i had em on m XJ for about 6 months, but above your avg redneck, the ones i had were a translucent white plastic, and i drilled out each nut and put an amber LED in each one, then hooked em up to my turn signals. got alot of laughs, each nut would blink independantly in sync with the turn sig... but i eventually ended up breeaking them off climbing a really steep hill coming out of a water pit.
I also agree. It was kind of funny the very first time I saw them and now I just assume the driver is either A) a hilljack B) a kid or C) starving for attention....I'm usually right.