role_color - The new color for the role, accepts hex codes without the hashtag (#). Also, accepts a set of text based colors such as green, blue, purple, yellow, red, orange, black, dbday, pink, white, gray, and gold.
icon - A new image to go along with the role.
Example
/editcustomrole Gimpy II 000000 icons8-basketball-48.png
Rolling back changes is as easy as clicking any of the available reaction buttons i.e. revert role color, revert role name, or revert role icon.