Black stone: Clean up yourself

I felt a tugging in my pants coming from the stone. I pulled it out and it flew out of its box into the sparkle. It dropped down on the other side of it. I carefully stepped around it and went to pick up the stone, but it looked different it was a different color, it was black. I tried to make a test wish for blue tires but it was different. Instead of the need to turn away, I felt I couldn't. When I could look away again I found four blue tires, neetly stacked to the left of me. (Basicaly this stone doesn't change things it replaces them without removing the originals)