Puntuado con 4 de 5 estrellas

I can only confirm that after update to ver. 6.6 I cannot see any options on Account/Identity Colors tab in addon-options window - only blank tab under it`s name.
In version 6.5 everything was OK.
Thunderbird 17.0.4.
Version 6.6 should have been fixed as soon as possible.

Esta valoración es de una versión anterior del complemento (6.6). 

This problem is fixed in Account Colors 6.7.