there just ugly ha ha............ the only car i think that can pull it off is a white car possible silvor but still look homosexual

 

A lot of people run into problems with aftermarket lights. For one a lot of people don't install the lights correctly and as a result they have a leaky trunk. Another thing is that because the housings and lenses are cheaply made it's possible for the heat from the bulbs to melt or warp the plastic.
Oh and don't forget that a lot of what you can get off of the net isn't even DOT approved.