For "Lost In Yonkers", our flats that we used were regular flats but for the color, we used a swamp green and we took like 5 publix bags and bundled them up together and dipped them into wall paint and gently patted the surface of the flat. This looked really good from the theater seats because it looked like some condo that an old lady would live in with an ugly color wall paper. BECAREFUL THOUGH!!! THIS CAN BE VERY MESSY IF NOT DONE CORRECTLY!!! MAKE SURE YOU PUT DOWN A DROP CLOTH OR ELSE YOU WILL BE MOPPING THE STAGE LIKE ME.