I hope you're not disappointed with the nem. If it is dyed you may end up with a beige/brown nem in the end. From the pictures and types of nems you've been looking at, and from seeing your tank in person, you seem to be going for color (and doing a great job at it!), you may not get that if the nem survives.
I'm definately no expert, but it does look like a crispa to me (have one), and it does look dyed, especially with the picture comparision provided by phender (thanks by the way!).
I would be worried too because some of those tentacles look very stubby, almost like beads. It makes sense though if the nem is dyed. I would be more worried about the physical condition the nem is in at this point, and if it would survive shipping, even healthy ones get very stressed during shipment.
Just my 2 cents, don't want to cause problems or rain on your parade. But don't want to see you disappointed either, especially since you didn't really want the clowns, you may not end up with anything that you want.
Good luck!