Take your sip of coffee and watch the map of Westeros come to life from your Game of Thrones Discoloration Mug. It's a perfect gift for any Game of Thrones fan out there. In fact, this mug is not just for GoT fans. It works perfectly for anyone who likes to have such innovative products in their everyday life. The mug looks like a pretty simple design but what makes it unique is the discoloration factor. This mug changes color which happens to make the map of Westeros come to life every time you add hot milk in it. Sounds like your coffee mug just got a great makeover.