I am a man of my word, at least when I remember what I said. This was recently brought to my attention. Sorry for the delay, but better late than never!
Anyway here are two examples of color studies from life. The first one was painted last winter. It's a color study demo I did for CSOPA. I worked on it for about an hour and a half.
The second was a one hour study I did in preparation for my portrait of Edward Cardinal Egan.
http://www.fineartportrait.com/egan_painting.html