Here's a shot of the Rima Ariadeaus region that I took two weeks ago. I took the .AVi using the Toucam on my 8" LX200, using a 2X barlow in altaz configuration. I've been playing with the resulting images for the last two weeks and this seems to be the best image out of the lot. You can see the main rille nicely, and there is decent color in the image, IMHO.
The rille itself is over 300 kilometers long, 4KM wide and .48KM deep.