There are a lot of ways in which a white bar stool can influence the overall décor of a room. For example, it can stand out by contrast or it can feature a quirky and interesting shape which allows it to become a focal point.
These stools, for example, have a backrest and a swivel base but they don’t have armrests. Their design offers them a rustic-industrial look which pairs well with the exposed brick. Traditional bar stool designs usually look something like this, although variations can also be found. It seems that these have leather-upholstered seats which offers an elegant look.
Leather furniture is usually something you incorporate in a traditional interior décor, unless the design is unusual and innovative, in which case it can easily fit in a more modern space. In the case of leather bar stools, the designs are not as versatile as for other material combinations. They tend to look more robust and they usually fit well in spaces that have an overall traditional and elegant design.
If your bar stool area is nearby other chairs, you might consider coordinating the seating throughout the space. This isn’t to say you should run out to the nearest furniture store and buy a set of identical-except-for-height chairs and stools. But you could consider keeping one style element similar for consistency, such as the wicker seats in this photo.