Sure sounds like auto tranny fluid to me.  If the torque converter 
seal starts going it can get slung ALL over by the torque converter (a 
condition I may be looking at right now).  I have in the past used a 
red dye to track down a freon leak, however. 

On the subject of refrigerant leaks, has anyone else noticed oil 
weeping from the A/C high pressure line in evenly spaced spots along 
the hose (about an inch apart, all around the hose) as if it were 
designed to do this?

Dan