No. The scales on a butterfly's wings and body come in a variety of different sizes and shapes. Some may be extremely elongated and resemble hairs while others are highly modified for the release of pheromones during courtship. Those responsible for making up wing color and pattern are generally wide and flat. They are attached at the base and overlap like shingles on a roof. The colors we see are the result of either pigments contained in the scales or the diffraction of light caused by scale structure. Iridescent colors such as blue, green, purple and silver usually result from scale structure. While pigmented scales are the norm, many species have a combination of both types on their wings.