i think its all personal prefrence. when i get around to ordering for my highlander ill probably go with tan or brown and green.."camo" and itll match the tones of the bow pretty nicely..i do like the looks of bright "cool" colored strings..just looks neat lol. all personal prefrence.
go here
http://www.vaportrailarchery.com/strings.asp
they have a program that lets you see string colors..not sure gibblet got them all or what not..but it gives you an idea of what itll look like