multi pane/tab view --- change colour according to tab (UI Enhancement)

Version information

Thunar 4.18.10

Current behavior

In Thunar one can opens multi-tab, usually when one does so it's 2 to 3 tabs.

The caveat is, that whenever you change tab, the highligting color of any tab stays the same.

For instance, one might have tab on the internal hdd and one for an external backup, in such a case you have a very high probability of same names in both tabs, but you do point to different locations and mind you drag & drop or delete!

Enhanced behavior

Solution 1: When they are multi-tabs, Thunar use a different highlighting colour either

• per tab (my preference)
• per partition/mount.

I propose, that this is either a new option in preferences

or Thunar automatically picks new colour, according to a rotation of the default colour by an angle of either:

• 360°/number of tabs; aka 2 tabs = 180°; 3tabs = 120° ; 4tabs = 90°; 5tabs = 360°/5, etc.
• imposing max 4 colours, so it's also fixed as long as the theme does not change (my preference, simplicity & fix behaviour).

See for instance, https://www.canva.com/colors/color-wheel/ and choose tetradic color combination

Thanks