Thanks for the question. There is no option screen available. I am Premium already but the Metro version is basic I guess with very little tweaking possible. I can install the desktop version, but as you may know the Surface is quite small, will give it a try though.
I use Evernote Touch on a Microsoft Surfae Pro 2. Is there any way I can change the looks of this app? There is a button in the middle telling me to Download Evernote for Windows Desktop, which I do not need, nor the desktop version nor the button to make this download available.