If this room is not your style, fine. But you can learn something about designing your own rooms from looking at other spaces that feature any style or taste. Good design tools are universal, and this room demonstrates some excellent design decisions.
To start, while the first impression is that this room is completely blue, with a closer look you can see the other colors that help this room work. The strong white elements in the wainscoting, ceiling and crown molding and the fireplace help balance the blue and keep the room feeling fresh rather than cloying. Pattern curtains also create a few color breaks.
The next good decision is the variety of blue tones. The walls are a light blue-on-blue pattern that is echoed in the upholstery. The drama comes from blue carpet. The floral pattern connects that rug with the rest of the blue in the room.
Patterns are well balanced. Although florals prevail, the variety of pattern color, shape and background allow them to work well together in the room. There are enough solid fabric choices to balance the pattern effectively.
This room also does well in terms of proportion. The high ceiling is supported by the curtains, mirror and artwork, helping the room to feel like an integrated space. Notice the not-to-style choice of a clear coffee table in the middle of the room. It works because it serves a specific purpose, to keep from cutting into the color and line of the area rug.
This is a smart room. If you pay attention there is something to learn from every room you see. Then you can take your own ideas and apply them to your own home with success.