Originally Posted by mossman
You can make your own. Cut two slots into a shoebox lid and place the bulbs into the slots. Cut a quarter-size hole in the center of the two slots. Place the lid onto the shoebox and spray some metallic colored spray paint into the box. Only spray a little at a time. The mist from the paint will coat the bulbs enough to mask the amber color and they will still emit amber light.
I tried this. Not too good of an idea because the bulb get's hot and it will cause to burn out sooner.