Thank you jwh
If I understand you correctly, are asking my opinion on the active tab. I think you noticed how the active tab is more highlighted 'without CT' and that's definitely a feature I like.
What I was really asking was about rounding off the tab corners like 'without CT'. Unfortunately I realized just now when I took a 2nd look at the images it's not clear that ALL the tabs are rounded 'without CT'.
I really think all the tabs 'with CT' have to be rounded like the 'without CT' version of Firefox. That's also consistent with the Mac interface look.
My opinion is that currently 'With CT' the look is so squared off it looks like Win8 - that's probably good for Win8 but not Mac.