I have been a Thunderbird user for years and love it. Over the years, I have created a large email listing for which I use different segments for specific communications. I have several “Email Lists” for different distributions. In recent Thunderbird updates, the email lists/group Icon, showing two images together, has become smaller and more difficult to recognize when scrolling down through the address book. Is there a way to add a color feature to each list/group to make them easier to find when scrolling the address book???