I have a similar problem with my new Sony VAIO (VPCCA15FG model)
The camera works on nearly Black and White mode and poor quality, on both Skype and the webcam companion (software included as factory feature), trying to make it better on the SETTING panel I've noticed an unmarked box tagged ENABLE COLOR, but it is impossible to mark this box.
I assume that there is something wrong with a driver.
On the DEVICE MANAGER the camera is recognized as USB 2.0 CAMERA, uninstalled and reinstalled with no changes.
Thanks for your help.