Here’s an easy way to make realistic recognition lights for aircraft. First, punch disks of the desired size out of Bare-Metal Foil. Next, place the disks on your aircraft and burnish them down. (Note: A smooth surface prepped with Pledge Future floor polish improves the foil’s adherence.)
Now, color the disks with fine-tip ink pens. Let the ink dry, apply a light coat of Future, and let that dry. You can add more color after the Future is dry if you want a darker color, or more Future if you want more lens for the light.