Things You'll Need
Instructions
Sign in to Xbox Live and enter the lobby.
Create a new profile using a second controller and name it "JD 2020." Sign in to the new profile on the second controller.
Press "A" when you get a message reading "Sign-in status changed." Sign out of both Xbox Live profiles.
Sign in to the JD 2020 account using the second controller. Then sign in to your original account using the first controller.
Change your clan tag and enter "rain." Unplug the second controller. You now have a rainbow-colored clan tag.