I have been working on the Golden brick that Ostia was built with and I believe I have captured the texture. Kind of a light wheat color I believe. Anyway, I have three shades of it up in the Roman Forum and they are, naturally, 1-2 and 3. Take a look and see what you think. I am leaning toward number 2, but can be swayed :o) They are right in front of the Rostra.