Some interior designers disdain working with clients who have never hired a professional before. Others avoid being hired by friends — even casual ones. But Kati Curtis was open to both, so when Beth Rumore and Craig Stanley, a couple she knew socially, approached her about helping with the interiors of their three-bedroom penthouse, she took the meeting and, eventually, the job. Kati Curtis Design re-imagined their white box Chelsea condo into a colorful, warm and inviting home.