The photo below is from Wikipedia. I've used it as an example of how effective reflected sunlight can be to for fill on a subject who otherwise would be too dark due to shadowing.
I've been at the beach in the late afternoon with conditions like this and I know the sun can suddenly pop out of an overcast skies through a break in the clouds near the horizon, but the effect is so pronounced, it almost looks like there is an additional battery powered flood not seen from this direction. The color of the direct sunlight on the photographer's jacket, and various rocks looks balanced, but the light on the model looks more yellow.
So I am wondering if this can be used as a correct example of how effective a reflector can be for fill.