The concept of my project is that I have a textured 3D model of a car.
And I want to be able to change textures on the 3d model by press of a button (like a yellow car after button press turns to blue for example).
I have my textured 3D model rendered, that wasn't a problem.
My approach to the texture change was that I have two .3ds files of the same model but each file has different textures (but same names).
So I would remove all the textures which belong to the model from the TextureManager and load new textures from file and store them in the TextureManager.
But now I don't know how to tell TextureManager to apply all those textures.
Because it does automatically and I couldn't find function for this in the specification.
Only way I got it to work was to reload the whole object with the new textures. But that is not very efficient.

So my question: Am I using the right approach? and: How to tell TextureManager to reapply textures on a 3D model.

Thank you