Koleston Naturals is a widely acclaimed hair color brand. But what is more interesting is their use of ideas and imagination in this billboard advertisement. The billboard is strategically placed on a promenade. It has a brilliant view of the sea and skyline behind it. The portion of the womanâs hair is cut in the billboard to capture the variations and hues of Koleston Naturals colors through the different phases of the day and night. It is much more than just a billboard-it is a big vast arena of colors and ideas.