He later worked on features starring the characters Vigilante, Johnny Quick, Superman, Starman and most notably Airwave, on which he experimented, on at least with story, with using only shades of gray for color.
He later worked on features. He experimented with story. This was with. This was on at least. He was using only shades of gray for color on features. These features were starring the characters Vigilante. These features were starring Johnny Quick. These features were starring Superman. These features were starring Starman. These features were starring most notably Airwave.