The lugs snap off most of them eventually, hence the prices on ebay. Plus the fact that everyone wants to swap the orange ones for clear ones.
When mine snapped, I used velcro to stick them in, and they've stayed put!
Mine snapped off too, i have bought a white set of indicators and side repeaters with orange bulbs, much cheaper than replacing the original orange ones
I have a pair of smoked from Fleur I think somewhere - seem to remember the two smoked lenses look slightly different when next to each other but fine when they're on each side... must be in the shed somewhere.