these are you colours from the explod headunit manual. i assume thats what your after?
Black - earth
Blue - antenna remote
Red - power
Yellow - power
Bluewith white stripe - Amp remote
White and white w black stripe - front left speaker
Grey and grey w black stripe - front left speaker
Green and green w black stripe - left rear speaker
Purple and purple w black stripe - right rear speaker
note the full colours are + and striped ones are - (important for good sound)
youll be hard pushed to find a car with wires conveniently labled. best way is to grab a cheapo test light (if you dont have one, or a multimeter)-
find out what wires are constant power, what is ignition power, earth to body somewhere - dont bother looking for an existing earth wire.
for your speakers just grab teh headunit wires that correlate with say your right front speaker, and hook them up to your existing speaker wires until you get teh right speakers working with the right wires. repeat til they are all on the right speaker.
solder and seal. jobs done. let us know how you go mate.