In case you have ever wanted to make your turn signals completely clear rather than seeing the tinge of amber from the turn signal bulbs, there are two ways to do it. First and most expensive is to find the Philips Silvervision bulbs usually sold in Europe. These are amber bulbs with a translucent silver outer finish. When off they appear clear, when on they appear amber.
The second method is to make them yourself at home by painting your bulbs with a light coat of Rustoleum High Temperature silver spray paint, sold at Home Depot for less than $5. This process is well documented on the BMW M5 messageboard. I did this for my M5, and now have done it for my M Roadster. The picture to the right shows the left lamp after treatment and the right as original:
I think you’ll agree that the 10 minutes or so required for the job is well worth it. It’s also possible to treat the front turn signals this way if you like. Enjoy.