"Invert Current Page" doesn't stick in Google Docs editor

[carcinization]

Thanks so much for this extension! I'm using it primarily to invert colors while editing Google Docs.

Global invert colors state works as expected (yay!!)

But when I try to use the per-page Invert Colors on a Google Docs editor tab, as soon as I start typing, it immediately reverts.

Possible solution - can we specifically blacklist certain URLs to always be in inverted mode, instead of whitelisting them to be excluded? Or can we have a per-tab inverted state instead of per-page? (see #31 )