Replacing 4-wire outlet and didn't label the order -- does it matter?
Be careful, the old receptacle could have been a half hot, meaning one wire goes to a switch and the other is always hot. Test both the wires with a meter to make sure. Turn all the switches on in the room  before you test. If they are both hot then you will need to abandon/cap off the one to the switch leg. Another way to tell is if you still have the old receptacle there will be a metal bus that attaches both gold screws. If that is removed then it's likely a half hot.