there would definitely be a brown/tan tone one, and one that would be girly colored (b/c I like girly stuff ; 3; ) the rest would be up to suggestions or randomly made hahahaha <3 maybe purple and turquoise :3
Brown/tan would definitely be a nice color combo, as well as a turquoise one.
I love turquoise.
I agree with Vicktorious on a red color,
Black is always a safe color to use.
Or if you feel adventurous, a teal/mint color since they're not used often even though it's close to turquoise.