Nevin

With the newest update to my extension, you can now change the background colour for internal notes. This includes the text input field as well as comments within tickets.

https://chrome.google.com/webstore/detail/zest-the-zendesk-colour-c/kohidmaedanhmmhkhkbeaonheneldfbi

I hope people can find this useful :)

I've developed an extension that will allow the colouring of individual ticket rows, which should help.
https://chrome.google.com/webstore/detail/zest-the-zendesk-colour-c/kohidmaedanhmmhkhkbeaonheneldfbi

Please feel free to leave feedback :)