So I ride a motorcycle and the motorcycle has some supports on the sides of the pegs made out of aluminium and the leather on my boots has been rubing on the supports leaving a shinny dark spot on my boots made out of aluminium i am not too Shure show to remove the marks safely. Thought of using distiled vinegar and water on the area but I don't Want to stain my brand new boots too badly so what do I do it's not a big issue but it's very visible and it's shinny and metalic so thought knowing how to remove such marks would be good any suggestions ? Thanks.