A single extruder multicolor file for Uno Flip. I left the red ellipse, but made it the same as the base. Each letter can be made it's own color if you want. 3MF file has the colors already set for easy printing.
Tips:
Open the gcode in the previewer, go to the first layer, and then note the order that the printer will want the colors. For me it was white, then black, then yellow, then blue, then back to white. (If you know how to force it to PrusaSlicer to put the highlight colors before the body to reduce the number of changes, let me know.)
Any little string of filament will show up, you can see some of them in my photo.
Slow the first layer speed way down. This will help ensure the details of the text show up well without flaws.