Employees Must Stop Crying

I guess you guys like signs. Here's another idea I've seen floating around with a personally-modified graphic based on an ISO 7010 “Mandatory” pictogram.

Printed with not one but TWO color changes. 0.2mm layer height. White base, blue for first color change, red for second color change.  If you're going to scale the model, I recommend keeping the Z height at 100% while changing the scale of X & Y.  Once again used sandpaper to clean up the top layers, then to get the vivid colors back, I rubbed it with common vegetable oil from my kitchen pantry.