Ant-collision lights are green (left) and red (right). AC lights on top of a vertical fin can be white or red/white. Go here (can't attach a PDF, apparently) for a good explanation of full scale lighting requirements:
http://www.creativair.com/source/_inst/requirements.pdf
You can make the lenses from clear plastic and shape/sand/polish to final shape and tint with Rit dye or spray a light coat of translucent paint (RC car body paint works well). Or you could cast them from crystal clear resin with the right tint/dye added.
The formation lights are a lime green/bluish tone.
Barry