I printed this with the color setup for my Covid mask straps so white and black are in positions 4 and 5 respectively. I split the print vertically using the Multi-Material 2S but it could be printed by swapping filaments at the layer change on a single color printer. I modified the original design with TinkerCad so that the frame was smaller to go better with my other bathroom sign. Darth Vader needs his troopers with him. The original Thingverse design:
https://www.thingiverse.com/thing:3612959

Print instructions

With the rounded corners the print is more inclined to stay attached during printing but I used a brim for good measure. To get the size right to match my other print I had to scale the design down in X and Y so it does lose some detail but you can always adjust the size to suit your needs.