Developer reply by DW-dev
Rated 3 out of 5 stars
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.
This problem is fixed in Account Colors 6.7.
To create your own collections, you must have a Mozilla Add-ons account.