You can install our site as a web app on your iOS device by utilizing the Add to Home Screen feature in Safari. Please see this thread for more details on this.
Note: This feature may not be available in some browsers.
I just received an email to order the 21 inch arachnid wheels for the Model S. I believe they are silver only. I am able to select any service center for delivery and install, so thought I would post this before I select my local service center.