Found a pretty cool idea for making things like: tail lights, marker lights, strobe lights, lightbars, traffic directors...
http://scalefirehouse.com/sfh_brd/vi...&t=5346#p46835
Seperate out the lights you want with something like paint, Scale the images with something like word. Print it onto paper or transparent sheet.
Mount the print out on some styrene to give it height, optionally wrap styrene with baremetal foil or reflector like scotchlite. Apply a miniscus of clear epoxy over top of light so it forms a lens.
Maybe even mount an led in it or behind it.
The extra texture in the light really adds depth and realism