details?
what exactly did you buy.... brand, model numbers, link to them if possible.
if you just have plain speakers then they normally use speaker wire connections. these would need to be hooked up to an amplifier or receiver to power the speakers.
if you have speakers from a surround sound system then i suppose a few of them might be color coded however ones meant for home theater use typically use speaker wire as well.
if you have a whole home theater kit you purchased (including speakers and the combo receiver/dvd player box) then they would all get connected to the back of that.
while not normally color coded they are typically lableled. LF/RF/C/SUB/LR/RR (left front, right front, center, subwoofer, left rear, right rear)...