When Fixer Upper host Joanna Gaines partnered with Kilz to create her paint collection [1], she also made sure there was an easy, mess-free way to test the colors. The solution? Eight-inch by 10-inch peel-and-stick swatches that you can order for $2 a pop and move around to the darkest and lightest walls in the room. Brilliant! If you're looking for even more inspiration, check out Joanna Gaines's favorite paint colors for the bedroom, bathroom, living room, and kitchen [2].