Most blinds available are horizontal blinds you open, close, raise and lower with a series of pulley cords and tilt wands. Some are vertical blinds, but most of these are available for doors, not windows. Blinds hang from hardware that mounts inside the window frame at the top of the window and the blinds hang down to either the window sill or slightly below, especially if there's no sill for the window. Although white is the most common color, it really depends on the material to determine what color the blinds will be. Metal, unpainted wood and bamboo blinds tend to be darker. Many blinds are made from wood and painted white or off-white, but you also have the option of vinyl, aluminum and even paper blinds, which often have designs painted onto them. The slat size varies between 1 inch and 2 1/2 inches for blinds, although some bamboo vertical blinds are very thin.