One color per room. I have the colors picked out. I will need you to come and inspect the rooms and then estimate how much paint will be needed. If anything please go over the amount in paint, not short. We might use it elsewhere in the house and we want the colors to match. However long it takes is fine I would just like one person to focus on this job, no matter if it takes a while since we have a quiet home. We may consider one other person possibly depending on how it goes and our general feel for you. We are easy going, if you need a break, please take one its no rush. Thanks!