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