I've scanned scores of photographs taken by different people with both the cameras and to my untrained eye, as compared to the D60, the the colors in the pics taken with the XS seem just a little bit less lively and with a mild bluish hue (mind it - i'm not talking on a very very marginal scale here... and its not based on 1 or 2 photographs, i've scanned hundreds at full resolution).
Appreciate ur views..
Most likely it's just that the Nikon has a more vibrant JPEG setting by default. If you're not shooting JPEGs, it won't matter in the least, and if you are, I'd suggest running through the different settings on both bodies in a store if you can- it's the only way to know for sure which you'll prefer. I certainly wouldn't pick one over the other based on Web gamut JPEGs on Flickr.