I've patched this to work with Thunderbird 31 Rated 5 out of 5 stars

Let me know if you're interested in maybe sharing the code on Github and I can issue a pull request - thanks.

Available

Hi, that would be most awesome! Here it is: https://github.com/brettz9/color-source

Thunderbird 7 Rated 5 out of 5 stars

Don't work with Thunderbird 7,
sad.