Okay, lemme see....
1. Remember that the flares are affixed with the same adhesive that is used on emblems and badges, which has been used since the late 1970s. Trust me, one they're on, they're not going anywhere
2. Since it's a factory paint, I would say that you should have no problems whatsoever. I've been selling factory painted body kits and bodyside mouldings with no problems, so I'd assume they have their act together on paint match.
3. Since there's no mention in the install instructions about mudguards not fitting with flares, and since they do fit fine on the MDX, I'd have to say that there won't be a problem.
4. Silver is now available, the price on my website does include shipping :4: