To help, a little background… LightBurn started as a ‘pet-project’ replacement for the Ruida software. The Ruida software uses different color layers to separate and define the tasks of the laser job.
LightBurn uses RGB color matching to best place shapes on different layers during import. Ruida controllers have a hardware limit of 32 layers, and we do color mapping to closest - If you use 10 unique colors, they get mapped to the 10 closest unique layers. Here is the color table used in LightBurn.