Dappled Sunlight, Old Crimson Farmhouse

A few things that I was trying to keep in mind while painting this. I ended up with a question: Does values of light and shadow shift in contrast as they move into the background?

Watching the values to capture the contrast between the bright sun in the late afternoon light. 

How the shadows up front differ from the shadows in the distance. 

How to capture the dappled light on the road near me. 

These were the main things I was trying to solve in this piece and maintain my focus area on the farmhouse. All this at the same time as the light changed quickly, but mostly the shadows got longer and that actually helped with my foreground design.

Something that I may have noticed but didn't really capture was that foreground shadows where lighter in shade then the shadows on the house. I'm not sure about this or if this is some kind of theory I've missed along the way. I was thinking atmospheric perspective all along but noticed that the shadows closer to me had more hue on the objects they were landing on. I have many questions here and now I know what I'll be trying to solve on my next outdoor piece.

Question: Does values of light and shadow shift in contrast as they move into the background?