If you followed the Thunderbird Labels modification I put up a few days back, you may have found out that it didn’t work for custom labels/tags. Yes, I knew that, but wanted to start off with the basic labels. Here is a quick tutorial on how to get your custom ones up and running.

What you’ll need to do is add the following lines of code to your CSS file. The code below accounts for one label/tag color, which, in this example, happens to be orange. You can see where the orange color is represented by the orange HEX colors. The lighter orange HEX number is for the background of the un-selected, labeled message.