I have clear corners on my 1986 300e (W124) and I love them. The only problem I had was finding yellow bulbs to go inside. I got my lenses from
They advertise that the corners come with bulbs, but they were the wrong kind. I simply used the OEM sockets and put in some cheap bulbs I got at Kragen. They work... but they're not German and I worry about compatibility and wattage. If you want my opinion, yellow lenses would look good on a yellow car, but if you have a different colored car, get the clear.
Before you go to preformance products, check ebay. The dealer does not carry these. They are aftermarket.