Shop for Paint at The Home Depot. The Behr Premium Plus 8 oz. Plum Frost Interior/Exterior Paint Tester # 660F-4 lets you try a color before you buy it. The tester is 100% acrylic latex paint that provides a long-lasting, tough finish. This sample covers up to 16 sq. ft. for a true idea of whole-room coverage and can be tested on almost any interior or exterior surface.