To create a lively, fun vibe in the oldest daughter's room, Hernandez and Greene lined one wall with RH Baby & Child bunk beds. “If the girls want to do sleepovers or a camp night together, they will all bunk up in this room,” Greene explains. A subtle pink paint color with just a touch of gray—Calamine by Farrow & Ball—makes the room appear fresh and delicate. Tasseled Anthropologie pillows are piled on the floor, while a series of RH Baby & Child light fixtures hang overhead…