Can I change the wood to this color and style or It has to be fully replaced?

The wood in the Model 3 is stainable, but you won't get that same burly grain. For that you'd either need to replace the wood or veneer or wrap it in a high quality vinyl.

 

You can do your own veneer.

 

That is the interior on my current car (for another 9 days). It's very nice but looks much better in that picture than in real life.

 

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