Rated 5 out of 5 stars

Hi Lab5

>> Unfortunately the update does not work for me. I have
>> to be on the safe side, the old addon de- and the new one
>> from the website installed.

>> Only "standard" creates an icon next to the corresponding
>> folder. All other colors (e.g. color codes) do not show
>> effect and an icon just created by "Standard"
>> disappears again.

> Could it be you have conflicting Add-ons installed ? For instance Phoenity ?
> Because it soulds alot as if some CSS rule overrides the styling fo the Icon and Phoenity
> is known to confligate directly with the exact CSS rules of this extension.

No, I dont have Phoenity. I have just a few addons:

Account Colors
compactheader
Enigmail
Lightning
Manually Sort Folders
Quicktext

As a test i disabled "Account Colors" and "Manually Sort Folders". Same behaviour.

I use the standard-theme

This review is for a previous version of the add-on (1.2.5.2).  This user has other reviews of this add-on.

Thanks alot for your feedback.

Pls deactivate ( not deinstall, just deactivate ) them all, except Colored Folders, then check wether the issue still persists.

Then reactivate them one by one to find out, which Add-on conficts.
Then post back your finding.
I'm trying to solve this, but i need that information.