My used Legend came with HyperLights installed in the rear brake light housing. They are positioned inside the housing on the far left and right facing outwards. The LED flashers are in groups of 3x2 ( if I recall correctly ) and flash quickly when the brake is applied.
They are very noticeable. I am not sure if they are white LEDS and appear red due to the lens of the brake light, or they are red LEDS shining through a red lens.
http://www.hyperlites.com
I once saw a BMW LED brake light that strobed several times before going solid. This was during a sunny mid-day. The strobe was excellent (like the cop LED flasher bars ), I've always lusted after a similar setup.