Wiring colors

Question

i have a 2000 honda accord and the wires from the back of the stereo were cut. i know what colors are for each of the speakers but i dont know what color the rest of the wires are. they are the wires that are in the car. iam hooking up a kenwood kdc-x815 and i already know what each color on the radio are for but need help with what color to connect them to in the car