I have been unhappy with the colors from raws on my new D7100. It's bad enough it has banding and color cast issues within dark shadows but today I decided to do a test against my D90 and ViewNX and the results conclude what I have been seeing. There is too much yellow and a lack of magenta in the converted raws with LR. Here is an example. I'm considering sending it back until this is resolved. Copy and paste the link into your browse I can't seem to be able to paste a working copy of it into this post. I remember when I first got my D80 how bad the color profile was, I had to shoot Jpegs for highend kitchens because I couldn't get the wood tones to look correct. Eventually the profile got updated.
http://www.flickr.com/photos/rv1000/8632966628/in/photostream