If you do a lot of planning on your EOS Nomad at home on a Windows machine, use [FN] + [PrtScrn] to copy your view to the clipboard.
Open MS Paint and [CTL}+"V" to dump it. Zoom out, select the Magic Sheet part and crop.
[Alt]+"A" to select all and now for the good bit. Right click in the center and at the bottom of the list click "Inver Colors"
Took longer to write then to do. Makes brilliant crisp layouts with white background and clearly legibly channels numbers.
Or am I re-inventing the wheel?