Rated 5 out of 5 stars

Fantastic, thank you!

This is only related to the theme because people will probably do this to match the colors in the message viewing window: For folks using the default color selection to alter the message content to match, make sure you "override content colors" always or you may have very difficult to read light gray text on the dark background.

This review is for a previous version of the add-on (12.0.2).