Have you done a compare of the footage through your card vs through your camcorder just out of interest?
If you like I will send you a bootleg DVD for nuffin so you can compare your results to what is already out there.
It does look a little light compared to the LD, but you should always play it back thorugh a calibrated TV monitor from DVD to see what it 'really' looks like.
It's hard to get the colour right, what software are you using to adjust it?