With a lot of other things going on, one has not had too much time for the Oil -- for an Oil follows a different pace than Today does; a technique invented slightly before the Renaissance. It doesn't want to hurry. It wants to lie idling like the angel on the Station Clock, still outlined in ink. (Or perhaps it is a little exhausted too.)
We also have a creepy-crawlie-subway-train going on.
A closer look at the angel. I tried to see that the shadings in the wings somehow corresponded a little to the dark blue sky and the light shining field above it; I often try to let certain hues come back in a kind of rhythm across the painting for the sake of balance.
I also note that angels have orange, just next to golden hair. So now you know that.