A little explanation: in my native language, there's a separate word for gray hair. So I was playing with words a little here, hinting at his morality and also his hair color (she said he is "grey" rather than "gray-haired").
An artist and an archaeologist have quite a bit in common. Every fresh sheet of paper is a dig site, your pencil like a brush gently clears way to hidden images, each one unique to the person uncovering them…