I looked at some of the sites mentioned. On 211-05-01...., she complained that it wasn't as 3D as she had expected. With an attic window, the sides of the window are not the same color as the "sill" Even if you paint your window sides and bottoms the same color, the sides and the bottom will look different because of how the light hits. This is what makes Attic Window three dimensional. The site marijasfabric shows the three denominational effect very well