Rated 3 out of 5 stars

To get the blue background in mail toolbar with this theme installed / enabled, try the following.

This snipped of code seems to be working for me in TB8, close thunderbird & paste the following into your userChrome.css file

toolbox {background: #d3daed !important;}

save the file & re-launch thunderbird

This review is for a previous version of the add-on (1.0.0.4).