Complex sentence: The early episodes are distinguished by having Moore break the fourth wall and speak to the audience (in character as Simon) at the start of every episode; with the switch to colour, this gimmick was replaced by simple narration.
Split into simpler sentences: The early episodes are distinguished by having Moore break the fourth wall and speak to the audience in character at the start of every episode. With the switch to colour this gimmick was replaced by simple narration.