dont think you can no, only carbon fibre ones available, but not to everyones taste. and if by clear you mean white? cos bravo lights are clear anyway.
it must be on the newer models as mine has a coloured outer plastic but smee's were clear and i think with some patience you could take out the red reflector and replace some red bulbs/LED's
but you have no chance of clear centre brake light, so you have to keep them or go for painting over them/tinting them!