>>6159422Medicos is odd when it comes to choosing colors. Maybe from a business or design standpoint they settled with certain colors beforehand and move on to the next project. Seeing a proper "3rd" version colorway isn't common (WF variants stand on their own so they don't account as "2nd"). I always imagine them having a sort of planning and design phase with various color choices directly from Araki or just "inspired" versions of their own before finalizing the release order of those colors for that single character figure.
The best you can do is nab a spare Joseph if the reissue did anything to increase extras in circulation and find a solid custom service to do the purple you want.
