I seen some on ebay the other day
Just search "ST185" and you will find them eventually
I dont bother with them because in my country u need to have the turning signals (or indicators) illuminated in an orange colour.
I like to use high power white SMD LED's in the original orange housing....It makes everything nice and visible at night, and when u think about it the flashy light is there to let other people know your turning....i already know im turning i dont need a light