My Lord Gershom of Haryse

I was very surprised with all the Beka Cooper fan art that there was none of Lord Gershom of Haryse, the Lord Provost. True there isn't much description of him in the book, other that he has long grey hair, a large mustache, weathered skin. I couldn't even find any description of the color of his eyes, so if some one is sharper than I am, please tell me if the color is specified.

Lord Gershom of Haryse is (C) to Tamora Pierce
Art (C) to me.