I'm about ready to purchase my next car and have been wanting an early 5 series. Found one that's been well-taken care of, low miles, and recently had some major work done (valve resurface, head gasket, water pump, Vanos, nearly $3000 worth of work). The only thing is I'm not crazy about the color combo. It's silver with grey interior. My preferred (exterior) color is the grey, but this one seems to be in such great shape that it could be a good find. But silver on grey is pretty bland. I know from watching a lot of Youtube videos that you can do a lot to spruce up the paint, from claying to polish, buffing etc. But I'm wondering if it's possible to darken the silver a little using a wax or something, without getting it re-painted? Like add a tint? The alternative would be do something with the interior, darken that somehow (polish the seats, replace the carpet with darker grey). Just to give the interior/exterior some contrast so it isn't so bland. Has anyone done this?