Hey you guys, I`m getting a skyblue office Bag real soon, I`m so happy. But how in the heck does one keep the handles clean and if they should get soiled, is there a way to clean them? I used to have a sky-blue first and I noticed after a while a kind of yellow-brownish tone to the handles, before i sold it. How do you keep it clean.? I think the white bags have the same problem and the lilac and I know the office does not come with a strap, to hold on to. Any advise?