Check these out:
These Chrome 3D Tail Light bezels mount on the existing tail lights
and have a 3M outdoor self adhesive backing. They are injection molded
ABS plastic to fit perfectly and triple chrome plated. They mount both the GT and V6 Mustangs.
They are Chrome and have a 3D shape to them, some others make a stainless steel version but it doesnt fit very well and is also dull.