Personaly I think a nutural soft color would be best. Never know what colors any one would be using with it. I have a problem with pink as I use lots of red. Don't like blue but so many don't like green. Beauty is in the eye..... so I'd use something that isn't a real definate color that would clash a room decore.
She did such a great job on these little butterflies that it needs to be a joy for whom ever gets it. Other wise find out who she plans to give it to and what colors they like.