Walter has started coming out more, every one of two times I go to check on him he's there. He's eaten the clams and almost has accepted the frozen krill I offered him one night. Favorite color seems to be the sort of a greenish gray.
Still haven't seen much of him, he came out while I was babysitting then went in again after about 5 or ten minutes, they sat there for another hour waiting to see him again. Haven't seen him today though.