I've just modified the folder tree's background in preferences, additionally the unselected background to have a consistent look and feel.
This results in
As you might see, some of the items have a background that is not equal to tree's background.
After some research, I noticed, that I've to modify the favourites background color, too.
The result looks even better:
BUT, any of those fav folders in a lister, now do show the same background as in the folder tree.
This is not optimal behaviour, at least this was not expected.
So, is there any way to set up colors for any items in folder tree without influencing the items in any lister?