Well, it seems like you got most answer already, but since I asked about colors for another of ARIIs 1/100 kits here:
http://www.macrossworld.com/mwf/index.php?showtopic=21191
I've learned a few things. First all colors, as Chad said, referred to is Gunze Sangyo and if you look closely on the instructions there are lines pointing to some parts and there the letter H with an encircled number indicating the matching GS color for that part. Also Hasegawas instructions provided on this site is very useful.
Isn't the Hikaru rather small, like 1/24 (mine is)? I think most color brands have skin tones that will be useful as a base color.
ChaosWarrior