Dial change on a skydweller

[Porker]

My Ad tells me that Rolex will change the dial on your watch (for no doubt an extortionate fee)

Now I'm thinking, how good that new black dial would look on a WG skydweller on bracelet!

Anyone know what the cost would be in the region of?

And would a dial change likely include the change of the underlying month wheel to red?

Feel free to photoshop away if you are blessed with the required skills :)