Abstract: The invention consists of the composition of reversible thermochromic and photochromic leuco dyes wherein the thermochromic and photochromic material is in the form of microencapsulated powder, or aqueous slurry and combined with non-solvent, aqueous based automotive paint for use in painting, coating, or covering the exterior surfaces of motor vehicles, more specifically automobiles, trucks, motorcycles, boats, airplanes, snowmobiles, bicycles, and any other propelled land, sea, or air vehicle, the process of applying these paints/coatings, and the methods of their use. The term “reversible leuco dye” refers to leuco dyes which have the property of going from a color state to a clear state when a stimulus is applied, and returning to the colored state when the stimulus is removed. The stimulus in this case would be exposure to heat for the thermochromic leuco dyes, or light for the photochromic ones.