Frame color in seating plan

I have one class that remains with its "frame color linked" to the seating chart while others are not. I've taken all of the colors off of the seating chart, but the colors remain in the Gradebook view. I would appreciate any help in solving this inconsistency.

I already have data and pictures into this class so I do not want to delete and redo. Please help.

If you removed the colors in the seating plan after removing the link, the gradebook will keep them.

You only have to remove the colors from the gradebook view. There is no need to delete any data.

Long tap on a student's name > Brush or tap on Tools (top bar) > Students to remove the row colors