When my friend Simon (born and raised in New England) moved to Tucson many years ago, I asked him if he missed being near the sea. “The sky compensates,” was his answer. I think of this when I visit him now in his new desert hometown. The sky is always blue, very nearly always cloudless. All the more striking because nothing in the baked brown landscape is blue at all. So when the alien color is introduced (as in this brick wall), it really stands out.