Hi Aris,
I didn't know GlassMyFox was yours, you have quite a selection of add-ons.
A user of my add-on, The Fox Only Better, mentioned there was an issue where, if GlassMyFox was enabled, the tabs wouldn't be transparent, only a sort of gray. I forgot to contact you at the time, and only remembered now that I saw you moderated the review where the user mentioned this. Personally, I can't reproduce this, GlassMyFox works perfectly for me with TheFOB, the tabs are all transparent. Do you have any idea what the user might have been talking about? Link for the add-on:
https://addons.mozilla.org/en-US/firefo ... ly-better/Btw, I noticed that GMF doesn't use the outer curves in the new Australis tabs. Is this a choice you made or is it because you can't access its colors to change them? I ask because I know it's hard but I did figure out a way to do it in my own personal stylesheet (using stylish). In case you're interested I can show you how I did it.