Whiteish
I almost might as well put up a square of pure white and say that it’s a photo of a polar bear fighting a albino bride in a snowstorm, but that’s my usually stunning lake view right there. And yeah, the windows are a bit dirty — I can’t imagine why the window washers haven’t been around in a while.
Reminds me of a great play called “Art”, and I think it’s even been re-done with the same idea under other names. It’s basically about a white-on-white painting, one friend loves it, and the other can’t even believe someone wasted their time and material to produce it.