I want to make a sort of goth looking fretless bass and decided to stain the maple fretboard and neck the color a silvery grey. Well, I went to Lowes and they have waterbase stains and will mix it for you but only sell in a large quart size which is around 10.00. I will never need this much so I went looking on the net and found a natural ebonizing method using rust from metal and vinegar. This is supposed to turn light wood grey and oak, rosewood, walnut, an ebony black. Here is the link: http://www.joewoodworker.com/ruststain.htm Anybody try this and does it work? I just set aside my bowl of wet steel wool waiting for rust to form in a few days. I must be crazy, but grey stain is a hard thing to find and i'm trying this.