Congrats, Ven! Going from yellow to purple is like... like going from a Keyblade wielder to Keyblade Master! ... Except all the keyblade masters get raped by Xehanort, soooooooo I guess it's not that great of a simile...
... Actually, they go into the game to work it out. And spoiler tag that stuff, man! At least have the courtesy to do that for the people on here who haven't watched it yet! ;P