For interiors, the color green ranges anywhere from the softest of mint to the boldest of kelly green. Each degree of the color can create a completely different mood, specifically in small spaces like the bathroom. Pale shades of green always creates this airy (even when there's less than a ton of space) and tranquil ambiance.
Mint green historically one of the most popular colors in bathrooms and kitchens, and is one that is still introduced today, specifically when working towards a retro look. Pair mint green with a pale pink, white or just simply on its own and the end result will be tranquil, sweet and slightly feminine; the perfect combination for a soak in the bath.
If you're looking to infuse green into the bathroom without painting the walls; green tinted glass shower doors are always a good option. A slight tint won't bring back gaudy memories of a bad pre-remodel look, it actually provides the exact opposite emotions of beach vibes and subtle color.
A little bit country and a little bit chic can easily be accomplished by bringing olive green into the bathroom. White easily tones down the possibly overwhelming olive and together they create a unique statement.
Images: as linked above