I'm saying you answered your own question because you're aware of the Magnuson–Moss Warranty Act and how it works. Every dealership and situation is going to be case by case basis, just because one person chimes in here to say that they had no problems, doesn't mean you won't either at the...
You basically answered your question with the Magnuson-Moss Warranty Act, they would have to prove that the mods you installed contributed to any issues, thus voiding the warranty coverage. It will be a case by case basis, so you may or may not have to fight for coverage if they try to blame...
Red is my favorite, followed by black, then orchid. Orchid just gives me NSX ivory interior vibes and I've seen how those have held up (or not exactly) over time. Just tends to show dirt more than other colors, but it is nice looking when clean.