sounds like it might be a false positive given the nature of the site, but wanted to let you know just in case. make sure to test the color in one room, or one part of the room, and live with it for a while. did you see the picture of the lens? the thick black layer covering the inside of the door is the result of years and years of smoking. for the slim sole, sole width is 1/4" narrower than sole length and may provide a better fit for narrower hooves. 