Currently torn between coloring the gatename or the selector. Try both?

Configuration:

For the selectors (-- / ><)
A. Default sign colour, with the sign's brightness taken into account.
B. The type of the gate (red for private, etc).
C. Neutral grey.

For handling gate names:
a. The selected gate is the colour of the gate's type (red for private, etc), everything else is the default sign colour (w/ brightn.)
b. All gates listed on the sign are the gate's type, with everything else being the default colour.

1 = Aa
2 = Ab
3 = Ba
4 = Bb
5 = Ca
6 = Cb