Although Tibetan style vertical prayer flags with 5 color streamers are used in Bhutan, the Bhutanese tend to use fewer streamers and most of their pole flags are solid colors with no streamers at all. The beautiful photo to the right (one I purchased online) is of a Himalayan mountain lake in Bhutan with a display of Bhutanese style prayer flags.Besides the traditional 5 colors (blue,white, red, green and yellow), other colors, like orange, and purple are also used.