This is basically the same as the original, but I made the warning a bit deeper. Some of the filaments I was using didn't have the chance to block out the previous color with only 1 layer. So the warning itself was washed out while the rest was OK.

You can force a pause on a layer by going to https://www.prusaprinters.org/color-print/

The .3mf file is the 3D Builder file. It will let you adjust the depth.