Rated 3 out of 5 stars

Από τον/την Sathors στις Οκτ. 24, 2010 · μόνιμος σύνδεσμος

Doesn't work for me either.In fact the tasks are now all colored in blue, regardless of their category.But keep up the good work, your extension should be quite useful !
A little precision : I've tried it under Linux on Thunderbird 3.0.9 and Lightning 1.0b1.