Styling properties for the panel in focus

[roro-kang]

Hello,

What do you think about styling properties for the panel in focus?
I am aware of the unfocused-split-opacity and unfocused-split-fill, those options add a layer of fading on top of the unfocused panels.

Setting specific style to the panel in focus would allow to set different fonts and background settings to the panel you are working on.
thoughts?