I've been asked in one comment to see the difference between RAW and jpg images for the Panasonic DMC FX150.
I've used Raw Photo Processor on OS X to get the data out of the rw2 file. The only adjustment I made was to change the white balance from "Auto" to "As Shot". By doing that, it's made the colours more vivid, but still not as vivid as the in-camera jpg conversion did.