Hello I have a problem. I was by a football game it the stadium with my speedy mono 30 at the weekend. While the halftime I went into the lounge to eat something. A friend take my speedy. Then I came back and on my speedys sign (louis vuitton made ..) were a blue mark I ask where it came from. he dont know How can I get it away? Are there any possibilitys? Its little but it nervs me so much.. thanks for your help.