Lack of color in ToUCam images of Saturn

Can over-magnification combined with bad seeing result in a loss of
color in Webcam photos?

Last night I tried imaging Saturn with a ToUCam Pro, 8" Celestron, and
3x Meade TeleXtender. (The 3x is new and I wanted to try it out - the
seeing was way too poor.)

I used the same setup last year, but with a 2x Barlow, and got very
colorful images, but last night's show almost no color. (I checked to
make sure the camera settings were not set to BW, and the camera shows
color indoors, so that's not the problem.)

Also, I was using 15 fps, 1/33 sec exposures.

Any comments?

Thanks,
Tom