I am looking for a cute theme to decorate my bathroom in

Depending on if you rather dark or light rooms, I would paint the walls either a navy blue or a beige sand color (my walls are a blue). I try to keep all of my decorations in a similar color scheme, so if I do dark, subdued colors (like my blue walls), I will use a lot of neutral colors in accessories. There are some nautical items that have bright reds, blues, and yellows, but I find the neutrals a lot more sophisticated.