If your green dress is more subdued or classic in style, then you can get away with wearing a brighter shoe color like pink or orange
Think aimless evening strolls on La Croisette in a Poupette St Barth's broderie anglaise cotton top and shorts
The top part of Ariel's dress is an off the shoulder piped bodice (piping is doubly thick than normal piping and done by hand in matching ivory taffeta) with a pink overdrape
Both pieces worked beautifully together when it came to their silhouettes, making for a natural transition between them
Looking back they are kind of hideous, but at the time they were fun
Otherwise, if there's only one main dining room, the dress code may change throughout the cruise (for example, casual the first night, and formal or maybe even black-tie to celebrate the last night)