I've had this idea in store for quite a while so I finally decided to release it to the public, this is quite straight-forward, basically there would be a large variety of robot heads that would go in the head slot of your Robloxian, they would be compatible with all your heads and change colour prior to the colour of your head. They would most likely cost around R$200-R$800. I made some concept models of what they could look like and put them in decal format. If you have any feed-back, please reply.
Concept Models: http://www.roblox.com/Robots-Unite-item?id=88552291