Are you talking about the wrap stuff to make them dark??
Iv got the spy vision tint on all my rear lights, mine is a Azure it really makes a difference and makes it look a lot tidier. . . .
Iv been toying with the idea of getting it on the front too but kinda fancy the eyebrows instead. .
http://www.spi-vision.co.uk/gallery/
O and it is completely legal :-)