I was pretty much staring into the sun here and the light filtering down through the leaves had a great effect.
I recently drove 120 miles to relatives in the country and it was overcast and I thought I had wasted the time but got 400 photos anyway, the lack of bright sunlight though has it's own remarkable quality and a different effect. When I was teaching myself painting once I read that colors are more saturated on a cloudy day, in bright sun there is so much reflection that most surfaces are a shade of grey, either shadows or bright highlights.