Both of these cars look quite nice. A couple of notes about the first car (the Manhattan). The ad states it has "rare overdrive." Overdrive was standard on all '49/'50 Frazers, it is not a "rare option." Not a biggie unless the seller has jacked the price up on the car believing it is. Also, you asked about colors, the color schema on the first car is not factory issue. If you just want a nice car to drive, that's not an issue but if you're looking to win trophies at Kaiser-Frazer Owner's Club meets, this will cost points.
The second car is not a Manhattan, but it's a nice car too. Some Manhattans, and the first car listed is like this, didn't have the belt line trim or wide rocker trim so from the outside the only real difference between these two is one is tutoned. Other differences, Manhattans have chrome inside window frames, chrome strips on the door panels, a chrome trim piece on the glove box door, color coordinated steering wheel, shift lever and signal light control knobs. All of these feature can be seen in the photos of the Manhattan. Notice the standard (the second car) also has overdrive because they all did. The '49/'50 Frazers are rare cars among the KF line. You don't see a lot of them and they're nice to own and drive. My personal opinion, I think the '49/'50s are the best looking Frazers. Generally speaking you see fewer of them at shows than any other model.