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2002 - Power Rangers Ninja Storm - Green Samurai Star Ranger
2003 - Power Rangers Dino Thunder - White Ranger
2004 - Power Rangers SPD - Red Ranger
2005 - Power Rangers Mystic Force - Pink Ranger
2006 - Power Rangers Operation Overdrive - Yellow Ranger
2007 - Power Rangers Jungle Fury - Blue Jaguar Ranger
This year has a purple ranger (Wolf Ranger) and I was hoping he would be picked but he hasn't appeared on the show yet. But it makes sense they picked the Blue Jaguar Ranger since they haven't ever repeated a color. Expect for the Pink Ranger, but when they introduced the Pink Mystic Force Ranger, they retired the Pink Time Force Ranger. When they introduced the Yellow Ranger, they retired the Lunar Wolf Ranger--but it seems he is back.
Related Topic: Update on Disney World Power Rangers | Power Rangers at the Disney Resorts