Hi
Yesterday I was flying in the area of Rio de janeiro with live weather. Local time was around 16:00PM. While the sun was still sitting about 35 degrees above the horizon, I noticed the “golden hour effect”.
Clouds consisted of a high top level layer (40k ft) and overcast till 9000ft. Every cloud layer does not only remove some light, it also makes it more yellow. I have tested this by climbing above the top layer clouds. Above these, the aircraft was nicely lit with white light, below them it had a yellowish tint. The lower i went, the more yellow it became. On ground level it looked like sunset colors while it clearly wasnt sunset yet!