In honor of Pat Long's post about his Pastel Special, I'm posting up more about them.
Specials are a base morph, and they, combined with Mojaves or Lessers or Butters and possibly even Het Russos (which has yet to be done), make Crystals of various forms.
Pastel Specials are a double co-dom, and they make the Pastel Crystal when combined with a Mojave.
Here is a good example of a Pastel Mojave, a Pastel Crystal (made with a Mojave), and a Crystal (also made from a Mojave, from left to right).
http://i862.photobucket.com/albums/a...h/ac61316b.jpg
Notice the head color difference between the Pastel Crystal and the Crystal...
Hope that helps!