Of the 287 Mustangs listed as being "available" in Autotrader, here is the breakdown by color, if you are looking for rarity or waiting to buy a particular shade of 'stang.

Black - 70
Torch Red - 48
Satin Silver - 38
Redfire - 34
Perf' White - 22
Mineral Grey - 22
Windveil Blue - 15
Legend Lime - 13
Sonic Blue - 11
Screamin' Yellow - 9
Not listed - 7

Those Mustangs listed as simply Blue were counted as Sonic if GT or Windveil if V6 (fair, if not accurate) "Red" was counted as Torch Red

So if you like Black, have no fear, they'll be plenty out there.

 

I have called several local dealers and it seems Red-Fire is the color around here. There are two fully loaded red-fires coming in. One each to two different dealers. I did hear about a white, silver, and a black one too. These were all GTs that I heard about. I did not ask about the V6.

 

Oooh, I want 'Not Listed'! Sounds pretty rare. Is it metallic or monochromatic?

 

It's clear! You can see everything under the body