To visually expand a window or room, choose soft, light or cool colors. Reverse the technique to make the window or room appear smaller and cozier by using dark, warm colors and high contrast between the window and wall. Vertical lines add height and dignity to a room, creating a formal atmosphere and drawing the eye upwards.
Vertical lines can also add height and importance to patio doors and other types of windows.
Vertical blinds in one of the many fashionable choices available from Hunter Douglas or Luminette Privacy Sheers a treatment that combines a sheer face fabric and adjustable fabric vanes are good options here. Horizontal lines are usually considered less formal. However, certain horizontally oriented treatments such as Country Woods wood blinds and Silhouette window shadings, a unique combination blind and shade with a sheer look, as well as pleated or Duette honeycomb shades in silk-like fabrics can be quite formal and elegant. Also, using valances and other decorative overtreatments can add height and formality to any horizontal window covering. Curved lines on windows have a softening effect.