Azrock's classic patterns given new life with modern colorways. You might see paint smudges or confetti when you first look at it, the pattern realized in appealing mixtures of color and hue. The play of dark and light, compliment against adjacent, and large and small gives it energy and vitality–it works especially well as a checkerboard. And with 77 colors to choose from, the possibilities are nearly endless.
The best way to achieve an open feeling is with wallpaper with light or neutral colors in a widely spaced pattern, like diamonds or mid-sized flowers, with lots of white space in between. This gives an airy, open feeling to the room.