My idea suggests that we put in a cape for all the 250 Million experience Completionists out there to show off their dedication and long hard work.
Similar to the 120 skill capes in Rune scape, the 250m exp capes will 'just' have a particle effect at the bottom, like so:
To get these capes(once added) you'll have to use your existing master cape of said skill on either Thomy or King Percival, Like so:
If a Player uses a master cape on either Thomy or King Percival, and does not have the 250m exp, it will display a message in the game chat saying 1 of 2 things, "Nothing interesting happens" or "You do not have the required skill level to do this".