Warrants for misdemeanor charges generally aren't extraditable, however, they can be and often are (especially if you signed a waiver of extradition upon bonding out of jail after your original arrest). Further, if left unattended, this warrant may come back to haunt you later in life, even if you have no interaction with law enforcement in N. Carolina (For example, when you try and renew your driver's license in North Carolina you may find that this warrant prevents you from doing that). I would consult with an attorney that can help you take care of this matter.
Warrants for DUI in Colorado are INTRAstate warrants and do not appear in other states. So, unless you come back to Colorado, you will not be extradited.
Can they? Yes. Will they? Probably not. However, you will want to address this eventually because warrants do not expire and eventually, the warrant will hold up your work or your driver's license. Good luck.