Suspect had short hair - Anthony had long hair

Why did the defense not question the fact that the sole witness described the man who was alleged to be Anthony Nealy as having short hair, yet Anthony Nealy had considerably long hair at the time which would have been clearly identifiable had he been wearing a small-brimmed cap (as the witness claimed).

Why were relatives/ friends/ co-workers not called to testify about the length of Anthony Nealy's hair - or his general appearance, at the time of the shooting?