Talk of stereotyping. We start stereo typing kids from the moment we discover their sex. Blues for boys and Pinks for girls. And woe betide the woman who dresses her? son up in a purple baby babygrow. Trust me I know. I dressed my baby son 2 years ago in a cute purple babygrow with a rabbit on it for Easter and the comments I received were not pleasant in the least, except when they thought he was a girl.
Baby Pink or Baby Blue? Give me primary colours any day!
I always found yellow a good option as it is unisex and can be passed from boy to girl or vice versa quite safely
I have used aqua green quite a bit. I find it fits both girls and boys, and is a nice and soothing colour.
But yellow could work well too!