The bathroom may feel sealed in when using habits. However, for your bathroom that is medium or large in proportions, the ceiling may be painted or one wall may be coated with designs in interior paint or tiles with designs to them can be utilized. Addition of more patterns can result in a design that is reflective of mid century modern style.
With color, being truly a minimalist or going for a look that is little is key so when picking a system with two colors, for places that smaller it is recommended to choose white and a color such as bamboo green, light aqua, delicate green, real wood etc to go with the white. To get a bathroom that is on the bigger scale, colours that are darker as with blacks, purples, reds, grays etc can be preferred.