The show is kind of cheesy, but the intro is cool.
Red Ranger: Applejack
Pink Ranger: Pinkie Pie
Green Ranger: Rarity (Yea, it doesn't make much sense...)
Blue Ranger: Rainbow Dash
Yellow Ranger: Fluttershy
Gold Ranger: Twilight Sparkle (Again, doesn't make much sense... but they are both kind of new...)