I thought Seaway would fit. The fact Seaway is a Ro-Ro makes sense for Larne. Norbay, I imagine, was very impractical on a short operation like Larne - Cairnryan.
Pride of Burgundy, Hull, York, Bruges and Canterbury, look very smart after full repaints and refit. Spirit of France recently got a repaint too.
Not sure about Irish Sea. I believe European Endeavour, European Causeway and European Highlander got a full repaints last year, I imagine they will just get certain sections repainted. Decks on European Enderavour could do with a repaint.