I was really leaning towards the rapid red for my potential Gen 3...but I saw it on a F150 at my local dealership the other day...and it didn't do much for me. It was a bit dirty, so that didn't help. To add to that, my ex has apparently ordered a Bronco and rapid red, so it's a little harder to get a good vibe for the color.
I did see an Anti-Matter at the dealer too, but it was dirty as well, and not the best light. Needs another look. Surprising, the color I found the most interesting was the Space White. It's not really white, and definitely not pearl, it comes off as a significantly lighter shade of leadfoot. Isn't available on the Raptor though, assuming the color options are accurate.