Thx for help...Global material changer...That`s all I need

Hi,

I work occasionally in the SketchUp drawings, eg, the kitchen cabinets.
I often need to render the same model kitchen, but with a different color.
Currently, after the first render, I manually change the color and texture every time I need to correct.
Example: Shelf for hanging part

The first time I put walnut texture, then the correct, rotate, pulls out ... until it is the way I want.
Then render the model.
When you want in the render the texture of ash, I have everything over again!
Is there a different method for changing textures on the model, when you want to have a model in the several textures

Thanks in advance