Nice details, I can totally imagine what you're describing. My personal favorites are blue and green almost equally, but blue wins out by just a bit. It comes from when I was younger and I used to run cross country. We had one season where I would go for a little walk before every race and pray, as I was praying I'd look up at the sky through the trees (blue and green) and every race the sky was entirely blue, not a cloud in the sky... that season we were undefeated and untied... plus, I just like the aesthetic of nature's two primary colors.