Allow Players to pick a texture

Like Spore when the player chooses there paint they're really choosing textures for there creatures. Is this possible? How would I go about this? Lets say I have a .texture file, would there be a way to alow users to paint there own characters with it?

there are multiple ways to do that - each has its own advantages and drawbacks...

the least amount of processing power is required by using different animations for the different colours/textures. The downside is you have to pre-make all the combinations you want to allow.

you can also use an effect like Tint or Color - although too many effects causes issues on mobile devices.

or you can use a program like Spriter that can create character maps...