Note for users of SeaMonkey 1.x:
A version compatible with SeaMonkey 1.x is available at the extension's homepage.
This add-on works best when used in conjunction with plain text messages. However, colors can be applied to HTML messages, but the result depends on the actual message. You can toggle HTML message coloring in the advanced options.
Please note that Quote Colors does not apply colors to quotes in compose window, i.e. when replying to a message you will still see the default colors.
More information and support:
For further information on installation and usage of this extension please take a look at its homepage where you can find a small user guide and FAQs.
Send all your questions/feedback/bug reports to the mailing list or address them directly to me. Thanks a lot!