Hi Jeff,
The discoloration on the screen can be a hardware related issue. It would be best if you take your device to a Microsoft Store to have it assessed. Our personnel will be able to provide you with the appropriate resolution. Should you need additional assistance, please contact our Answer Desk. If you're outside the US, refer to the Global Customer Service phone numbers to get in touch with the Customer Support in your region.
Feel free to post back if you have any concerns.