Laser Warning Sign - Multicolor

Needed a sign to warn folks of the laser in operation in my workshop so I decided to make one. It had the added bonus of being used to teach my wife how to change filaments mid-print using the Cura post-processing plugin. I started with yellow, then black, and finished with red. At 0.2mm resolution I changed from yellow to black at layer 9, and from black to red at layer 14, but your specifics may vary depending on your resolution and other settings.