I’m a die hard FF and TB user. I’m on v78 and it looks different but nothing broke other than some weird folders popped up on my gmail account. I fixed it using the web version of gmail but it was a PITA. I have some customization to FF and TB so that might be helping me out.
I’m considering ditching both products and using Outlook (gasp) and chrome (double-gasp) because the Mozilla products are making me feel like I’m an alpha tester.
You can change the folder colors!!
Right click on any folder> Properties> Icon Color
I now have colorful folders!
Now looking to see how to reduce the spacing of the email lines under the Subject heading. They look double spaced to me.