could someone give me a light setting, in terms of an RGB value, for a mid-day sun. I figure its something in the yellow range, but maybe theres a precise starting point.

Attached Link: http://www.3drender.com/glossary/colortemp_F.htm

Nah, midday sun is very blue and 'cold', not yellow. In Kelvin (the measurement used for light), it's around 7000K. Late afternoon sunlight, which IS yellow, or at least, 'warm', is around 4000 - 4500. As a comparison, standard daylight is rated at 5500 Kelvin, as is a photographic flash. A household 100-watt lamp is around 3,400K. The lower the color temperature, or kelvin, the 'warmer' the light is. If you're interested, the reason late afternoon light and sunsets are redder and warmer is that the sun shines ACROSS the earth's atmosphere, not directly down through it, like it does at midday. This means the sun is 'filtered' by more atmosphere, and takes it's red color from that. Standard photographer's knowledge. (And I'm a photographer). mac

Incidentally, the reason you get yellow/red pictures when shooting with household lamps (tungsten) is that normal color film is balanced for 'daylight' at 5500 kelvin. Using lower color temperature lights gives it a reddish color. The reverse is also true. If the light is too blue, like midday sun, you get blueish shadows. mac

Just went out and starred at noonday sun to determine its color. Empirical evidence indicates it to be 0,0,0 black.

LOL @ Nance

Nance, you're supposed to take your shades off. That way it looks whiter. mac