I'm looking at it right now (using Patrick's driver).  It's publishing
"rgb8". It also does not currently provide CameraInfo.

For it to show up in rviz it needs the CameraInfo -- otherwise you might as well just use image_view.
 

The rviz doc seems to say it needs CameraInfo, but does not mention
which color encodings it supports.

I've added the supported encodings to the wiki page: http://www.ros.org/wiki/rviz/DisplayTypes/Camera
 

Where can I find that list?

Thanks,
--
 joq
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