Here's what I did to get the colors to show up correctly (they would be tinted blue).

In /etc/modprobe.d/options, add:

• options gspca force_rgb=1

• options spca50x force_rgb=1
• options spca5xx force_rgb=1

I'm really not sure which driver I'm using, so I tried the "shotgun approach" and it seemed to work ok after rebooting the machine.