Arduino and power relay control


I am newbie and i need your help. What i want to do is to control PSU cable with my arduino. I have a power relay, but i have no idea which cable i should connect. I hope you can help me by saying cable color and number. LIek shoul i connect green cable to port 1?

Please click on a picture so you can see numbers.

I also followed this tutorial: Controllable Power Outlet - SparkFun Electronics
But there is different cable colors ;(