Good attempt. Rated 3 out of 5 stars

Tested on Sunbird 0.7pre on windows XP
1- Some of the text in view pane are black or dark grey against black background. Can not see the text clearly.
2-Somewhere the theme is asking for "chrome://browser/skin/gripper.png" and giving errors.
3-I would appreciate some work on the icons.

This review is for a previous version of the add-on (1.0). 

Thanks....

1 - That was by design, but I am considering lightening them up just a touch. :)
2 - I'm not getting this error in Console²
3 - What did you have in mind? I took the default icons and incorporated them into my button motif. I'm happy with it.

[Note: this reply was edited by an admin to remove formatting errors.]