I've got a 2008 C30 with those incredibly-stainable cloth black and grey seats. Steam cleaning always does a decent job of getting the stains out, but at the end of the day, I work construction and live on a farm. I can go maybe one week before I'm back to square one, even more so in the summer. Has anyone had some success in dying the centers a dark color to hide the staining? I know it's not ideal, but I'm just trying to be practical here.