You could, but that would be missing the point of the whole honesty exercise by using an overly restrictive definition of lying. In 'Lying', Sam Harris defines

You could, but that would be missing the point of the whole honesty exercise by using an overly restrictive definition of lying. In 'Lying', Sam Harris defines a lie as an intentional act of deception (or something like that). That definition fits your suggested responses and I would call them lies. Answering "No, but I think the colour matches your eyes", on the other hand, would not be deceptive, assuming you did believe that.