Complex sentence: Willis created the trope of warm ambers to denote nostalgic glow for the past, for the young Vito sequences of "The Godfather Part II"; many films since then have copied this cinematic technique when depicting pre-World War II America.
Split into simpler sentences: Willis created the trope of warm ambers to denote nostalgic glow for the past for the young Vito sequences of "The Godfather Part II". Many films since then have copied this cinematic technique when depicting pre-World War II America.