We had a fabulous day for the plein air workshop at Torrey Pines.  I think that some of us thought that we would be rained out.  It turns out that it was a  perfect day for painting.  It was bright and sunny, there were huge breakers and the wind was blowing spindrift from the tops of the waves.  There was just enough haze to make the bluffs look interesting.  All in all everyone produced a successful painting.  At the critique there were quite a few questions about aerial perspective, adding sky to background is the key to getting the aerial perspective. 

The answer to the question about painting shadows on a overcast day is:  The shadows are warm because the light is so cool.  Shadows are usually the opposite temperature and a complement of the light source. 

Pat