Complete the indicated task to unlock the corresponding color. You can earn stars by completing the following tasks: defeating the Elite Four, finding all Shining Leaves, and capturing all 493 Pokemon (not including event-only Pokemon).

Unlockable	How to unlock
Black Card	Earn five stars.
Blue Card	Earn one star.
Bronze Card	Earn two stars.
Gold Card	Earn four stars.
Silver Card	Earn three stars.