I liked it when BMW used clear lenses for the rear turn signals. Gave it a really distinct European look compared to most American cars before that used the same red brake light bulb to double as the turn indicators (dangerous IMO).
My favorite was the E46 which combined amber blinkers behind a clear lens a touch of modernity with the LED indicator bulbs.
Loved it. Not only did the clear lens give a nice contrast instead of a big red blob on all the newer Euro cars but the amber blinkers also are an instant signal to drivers that the car is about to turn or make a lane change.
Not a fan of amber blinkers with red lens/housing however. So my vote would be for amber blinkers but with a clear housing.
