Hmm. I hadn't even noticed, but now that you mention it, there is some "blueish" color there.
There was a high blue sky, and I hit everything with Neem Oil yesterday evening which can leave a bit of a sheen, so I'd chalk the effect to reflection. If you look behind the "leaf tops" you can see colors that are more representative.
In "Real Life" the leaves are prototypically green - not deep green nor light green, but pretty much in the middle. I also note some of the cones - particularly in the middle of picture - look almost yellow. That was due to a early evening sunbeam peaking through the trees. The cones are actually quite uniformly "middle green" as well.
The mites had made it to about the 12 foot mark before I finally realized what was going on. Fortunately that is right about at the bottom of where the cones start, with the highest concentration between the 15 and 22 foot levels. So I think I'm ok on that count.
But the extent of the damage from ground level to around 10-12 feet is significant enough to suggest a humongous population at its peak, and I assume I'll have to keep up my end of the war until the last eggs have hatched.
Curiously (to me, anyway) I had zero problems with either two-spotted mites or "hop worms" last year. This year they've both been a plague...
Cheers!