Shop for Paint at The Home Depot. The Behr Ultra 8 oz. Plum Frost Interior/Exterior Paint Tester # 660F-4 can help you envision what the color will truly look like on a large surface. This sample is a low-VOC paint and primer in 1, and provides up to 16 sq. ft. of coverage. Use it on almost any interior or exterior surface to help you decide if the color is right for you.