I have Nautilus 3.4.2 on Ubuntu 12.04. I use the second pane via F3 all the time.
However, there is no colour change when I change which pane has the focus. There is on Nautilus 2.30.1, ubuntu 10.4 which is on my other machine. It is a poor fix to downgrade this machine, I would rather upgrade the other one.
What do I do to change nautilus 3.4.2 to support different colours in the two panes, depending on which has focus?
E.g.: upgrade Nautilus to one which has this feature; downgrade Nautilus ditto; find a gtk theme which supports this because somehow my current theme doesn't...?
Is it one of these answers?