Rated 4 out of 5 stars

I was looking for a replacement for Charamel which no longer works with higher versions of Thunderbird, and I found this one. It seems great! Two new features, however would make it awesome: 1) Can we color the tabs, like we can in Firefox? This would help a lot. 2) I really like the tabs on the bottom. I note that with Classic Theme restorer, you can accomplish this on Firefox, which I do. However, wouldn't it also be great on Thunderbird? Thanks for listening, and for making this wonderful theme work on T-bird 34.

This review is for a previous version of the add-on (3.0.9). 

Thanks.
I think that these features are possible, but I have not the time now for looking at the development of these features.
For tabs on bottom, you have 2 add-ons that can change the position of the tabs :
- Rise of the Tools : https://addons.mozilla.org/en-US/thunderbird/addon/rise-of-the-tools/
- Menu On Top : https://addons.mozilla.org/en-us/thunderbird/addon/menu-on-top/?src=cb-dl-recentlyadded