Designer Drosophilla... Who wants one?

With the discovery of the ability to manipulate novel phenotypes by the the Heat Shock Protein 90 (HSP90), it has presented the possibility for a person to choose what something looks like. So far it is only in Drosophilla and a plant, but if there is the slightest chance that this knowledge could be passed over, then the possibilities are endless. People could change their natural hair colour, skin colour, maybe even metabolism, and combat obesity. But at the moment it is limited to fruit flies and plants. But hey, some people can dream.