Human's focused/unfocused selection colors are round the wrong way

In general, focused items should have higher contrast than non-focused items.
For example, in the Human theme the title bar of the focused window is white on
dark brown, while the title bar of unfocused windows is mid-grey on light grey.
Good.

The default selection color, however, gets this the wrong way round. It has
focused selections being white on mid brown, and unfocused selections being
white on dark brown. This frequently causes me to mistake which is the focused
element.

Assuming brown is retained, I suggest changing focused selection to black on
light brown, and unfocused selection to black on light grey. (Black on a light
color is easier to read than white on a dark color.)