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NuPastels
Jimmie,
I neglected to address your question about Nupastels. There is a thread in Materials that discusses various manufacturers and lightfastness. As this is an ongoing investigation by the ASTM, there is no definitve answer as yet. I do believe, however, the Unisons, came out with flying colors, that there is no information about Giraults and that there is a problem with the NuPastels.
As to the pastel portraits, now that the weather is amenable, drag a few high school students outside and do color studies of their faces. Use a clothesline, anything, to drape different colored backdrops. Avoid direct sunlight and too much greenery, an umbrella on a rooftop would work fine. Just spend a couple of weeks studying the wonderful variety of color in the human visage. Do quick studies, half hour, one hour. Don't make them too precious.
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