"Good insight. My mother would stop dead in her tracks once she reached the door out of her bedroom. She had to step from blue to white. Everyday, stopped and called out, I'm awake you know. If I didn't move to get her quickly she would say, Bobby where are you?, and just stood there. Interestingly, she did not have a problem walking into the bedroom, going from white to blue. Bob DeMarco AlzheimersReadingRoom.com" - Bob DeMarco