Yes, Gold sector was II (AC) Sqn. I can't remember the others but when I did my second tour on XV, we didn't seem to use the colour thing anymore.
In relation to the runway, II (AC) were in the SE, XV in the SW, 16 in the NE and 20 in the NW. On my first tour the site that 20 later occupied was empty and just dispersals and a hangar. When I returned in 89 it was fully hardened with 20 Sqn in residence. I think I'm right in saying that the Siegfried line or West wall ran through the 20 Sqn site.