Improve the appearence of the colored background tabs
I miss the old appearence somewhere between 2.0 and 3.0 when the inactive tabs didn't have a gradient, but had a thin colored line instead.
The current appearence is this:
The gradients look ugly to me :( I'm suggesting an option to choose the appearence between, for example,
- a dimmed background tab color at full height
- a gradient (the current and the only one)
- a regular tab color at minimal height