What color-coding preference do you select to make the playlist regions shown below have different colors?
Select Track Type under Default Track Color Coding, and select Track Color under Default Clip Color Coding.
Keep Always Display Marker Colors selected.
Select None under Default Track Color Coding, and select Clip List Color under Default Clip Color Coding.
No special preference is necessary. Playlist view automatically color-codes a variety of colors to playlisted clips.