[albert_e]

> used Tasker to listen for L-R shake action and make that temporarily disable grayscale mode for 20 secs

Wonderful

I am using gray scale on personal phone permanently, but avoided that on work phone as I might need to discern color in some work documents or screenshares.

What you describe seems like a perfect solution but does it work on all Android phones?

If you could throw some more light on the steps ... appreciate that!

[cypherpunks01]

I do think it will work on non-Pixel phones, but you do need to enable Secure Settings for Tasker, which probably can be locked down by Mobile Device Management or other admin control methods that a work device could have.

Listed my config in a sibling comment:

https://news.ycombinator.com/item?id=40465686