Review for Quote Colors by Piro (piro_or)
Rated 4 out of 5 stars
This is very useful! I frequently receive messages containing deeply nested quotations, so I cannot imagine how terrible if this isn't available. Moreover, this provides extra options for hidden preferences of Thunderbird itself.
This review is for a previous version of the add-on (0.2.9).To create your own collections, you must have a Mozilla Add-ons account.