Hello, inspired by Sarah's t-bird tip I started playing around, here something that I discovered: <tip type="Thunderbird quote colors" author="kasimir k"> I used to love a Thunderbird extension, which gave different levels of quotes different colors for text and background, but alas! it ceased working with a later T-bird version. At http://texturizer.net/thunderbird/tips.html#app_quotelevels there are instructions how to manually configure similar feature by editing userContent.css file. To find your configuration files, have a look at http://texturizer.net/thunderbird/edit.html If you don't like editing configuration files, or if this method doesn't work (it didn't for me... ), no worries: Malte Rücker has updated his Quote Colors extension to work with T-bird 0.7 http://quotecolors.mozdev.org/ </tip> .k