Open Marker for Professor Evil and the Citadel of Time Board Game

This is a simple, flip-able open door marker to replace the simple ones in the game Professor Evil and the Citadel of Time… though it could easily be used in other games and TTRPGs. Instead of putting the tokens on and off the board regularly, you can simply flip these over in-place.

If you don't have the ability to print in multiple materials/colors (me either), it's very easy to get this effect with a filament swap. I recommend 0.2mm layer height and doing the filament swap at layer 16.  

I also recommend arachne walls. Classic might work but it's possible the thin parts of the letters will have trouble.