Arrows and squared in CB

Hi

Can anyone tell me exactly what the colours red, yellow and green mean when they appear in annotated games in e.g. Chessbase?

Simply googled: "Chessbase arrow" and found this:

http://www.chessbase.com/support/support.asp?pid=227

the arrows mean:

 Green -- ALT -- Defending or controlling a square. Yellow -- ALT-CTRL -- indirect attack, planned move, or (by using a "chain" of such arrows) a planned multi-move maneuver. Red -- ALT-SHIFT -- attacks and threats.

The Squares mean:

Green -- ALT -- a strong square or an important piece. Yellow -- ALT-CTRL -- general square groupings (such as open files or the four central squares). Red -- ALT-SHIFT -- a weak square or an attacked piece.

me who uses both:

how do i make the arrow colour very light green?