I took several photos in the Valley of Fire, located about an hours drive from Las Vegas, NV. The weather was very overcast. Some of the photos show the vivid reds and oranges of the sandstone, yet in others, they seem to have a blue tinge to them. The flash was on for all the photos. Distances from the objects and camera angle, direction are the only variations. Anyone have any idea as to how to correct them in the field, or in the digital darkroom? Camera is an Olympus Sylus 400. [URL]http://vegashiker.smugmug.com/gallery/1170891[/URL] Thanks