Colour textures

Hi all blenderers…

This is probably a ridiculous question, but here-a-goes.

Can the colours set to an object’s faces be set as the texture for that object?

MASSter

Hello
ridiculous maybe not, but difficult to understand, yes?!
Bye

Well this is what I have for a game so far, and only colours have been used. What if I wanted to set the colours as the texture?