Audio Systems: Colbolt help, rear speakers, solid colors

Question
On the rear speakers of a 2005 colbolt what are the posiive and negative wires. the colors i have are brown,light brown,on the left side and baby blue,blue,one the right and they are all solid colors. Out of these colors, which ones are + and -

Answer
dont actually have the diagram for this car but it looks like most of the chevys traditionally have:
lt blue = rear right neg
drk blue = rear right pos
yellow (light brown maybe?) = rear left neg
brown = rear left pos

there is a way of testing it, it's not too easy though.  you have to have a good ear and know what you're listening for.  it cant hurt the speakers if they're backwards, it just wont sound right.