If you use the New Vehicle Locator on the Dodge website, selecting the 2010 Challenger. On the next page, just select the color, input A zip, and select 200-mile search radius. The dealers that have a B5 Blue will come up with a number listed, all others will say "Contact Dealer". If there's a number, click on the dealer, click on the B5 in their Challenger inventory, and click on "View Window Sticker" to see the car's specific options (the right-hand side column!).
You can put in zips for every major/overlapping city into the Dodge website until you cover all of the United States (and I can tell you that it is rather tedious), but I guarantee you'll find one. I searched nationwide for Furious Fuchsia and Plum Crazy R/T's in Auto or Man with the Super Track Pack. The majority of the HIP-colored Classics I found were in the Mid-Atlantic region (IL,OH,PA,MD,etc.). There was hardly anything out west.
Even if no one local has one, and you find one at a dealer 600 miles away, you can still work a long distance, even exclusively online, deal with them. I'd suggest dealing with the long distance dealer to cut out the pie-wanting middleman of your local dealership. Unless you have a trusted, local dealership that is. They can transfer the car to your local dealership for no or minimal cost, or even drive it to you!
BTW, I've read and been told to try and talk to fleet sales at the dealerships. They work on quantity sold and not on commission, so they're easier to bargain with with less hassle. Also request to see their Invoice for the car--you definitely shouldn't be paying over that amount for a 2010.
If you really want it, you can make it happen. Good luck!