John
the colour is there you've just need to process it correctly, if you have a look at the histogram in PS you'll see it's really far to the left which is refered too a clipping the black point, you should be aiming to balance the RGB in levels, curves etc so you have a nice bell shaped curve in PS histogram.
A lot of articles on the web about processing DSLR images
one of my first sources was
Jim Solomons Cookbook
http://www.saratogaskies.com/article...ook/index.html
it might be helpful
also colour enhancement comes from a modified DSLR