NERD's site even says that there are Desert Ghosts who are co-dom as well and that it just depends on lineage. i suppose if you called them and asked how much they would sell a co-dom Desert Ghost for they could well have one.

http://www.newenglandreptile.com/ner...ll-python.html

There is a plain Desert and lol her colours are the same as my fire except for the top of the head (that is all a blushed colour, mine has that but on the back there is an even brighter circle of orange)

http://www.albeysreptiles.com/desert07_1.htm

This is Kahl's co-dom:

http://www.pkreptiles.com/collection...sp?id=70000010

Pro-Exotics doesn't seem to say if it is co-dom or recessive:

http://www.proexotics.com/pricelist_...all%209-08.jpg

So yeah I think the two kinds look distinctly different, however as NERD's says the Desert Ghost depends on the line, if you really want to find out if the Desert Ghost is recessive or both you could call and ask NERD about it.