Theme support?

You can set it to make the tabs translucent via the colour... button in settings.  The transparency is limited though as too much would make things hard to read.

I've overlooked the transparency setting. The transparency level is great, just a little bit too much grain imo. 

Basically, I don't need themes - just a little more settings to match my desktop theme. Mainly looking for a way to get rig of the light grey. To have a "dark" theme (dark background/light fonts) on everything, not just the active tab.

The following settings would be great:

Active tab color, 

Active tab font color,

Non-active tab color,

Non-active tab font color,

"Background" (bar) color, 

Slit up in focused/non-focused. Maybe a general focused/non-focused setting would work well, that makes everything a bit brighter if not in focus.

And maybe:

customize buttons (close, menu),

transparency level (for active tab too),

grain level (and maybe some grain/noise textures to choose from, or load your own),

and size. (height)

Found a possible bug:

When having transparency activated and disabling "Tab bar should extend to full window width", the inactive tabs have no blur and grain effects anymore.

I don't think that this is intended - it makes them quite hard to read...