Maple Story 4th anniversary of the maple leaves?

The maple leaves I am now the recipient of the monsters and leveling up (no longer gold), but I have no idea what they are and how to use them. I've checked the website of Nexon, however, do not give a clear description of where I can use,

For the red leaves, talk to the manager of maple (the NPC one) and is redeemable against the hats and earrings. Help with mine also plz.http: / / / question answers.yahoo.com / index; _ylt = AuEY82qQbugpFahC.gyNa6Lsy6IX; _ylv = 3? qid = 20090510121936AAPIEzL

Maple story [Golden Leaf]