Do use RGB colors.
In illustrator, you may need to specify RGB colors before saving as or exporting to PDF.
|This graphic uses RGB Blue for the cut outline and RGB Black for the filled shapes.||This is the result, you will get a cut out with the black areas etched.|
Don't use CMYK!
The colors look OK to the human eye, but CMYK values are not recognized by the laser. Orders submit in CMYK will be returned for revisions.
|CMYK Files will simply not cut anything out at all.|
Download the vector file here, open in your editor, and see for yourself!