Thread:Hermionegenius/@comment-37589255-20190521070342/@comment-37589255-20190522042956

https://lost-cities-keeper.fandom.com/wiki/Template:FriendBadge

If you click on this link, it'll take you to a code sample. Over there, in the section that says "usage guide," there's a part of the code that says "gradientcolor." If you just read through the instructions there, it'll most likely make sense!