Hi I bought a graffiti keepall years ago when it first came out and had been using it for a long time. I was just thinking it would be nice if I could give it a wipe. Most of the dirt on the canvas came off easily but I did need to give it a good wipe. However I noticed the cloth became sort of brownish color and I wasnt sure if it was just from the dirt or the actual paint of the canvas started to come off. Can someone tell me how to clean the canvas? especially the silver graffiti one. How can I clean the vanchetta leather? There are some watermarks on the bottom of the bag and the handles are darkened from normal use. I don't know if this is true but after I cleaned the surface of the canvas, it has gone kinda dull looking?! It would be great if anyone can spare some tips, I am totally useless when it comes to maintenance.