This extension adds a dark mode for canvas.
This extension is available on the Chrome Web Store.
If you would like to fix/change any of the styles, your expertise is welcome! This is an open source project and I hope that users will tweak the extension as they see fit.
git checkout -b my-branch-name
chrome://extensions/
on your browserLoad Unpacked
I will be pushing the updated version to the Chrome Store often.
Donations are appreciated but not necessary. Thank you, if you choose to do so.