Researchers from Taiwan, Footwear & Recreation Technology Research Institute some time ago announced that they succeeded in making leather shoes that can be used for women's shoes and can change color when exposed to sunlight.
The purpose of this is made of women's shoes make shoes can change the colors for the women in order to have shoes that are more fun and make the user's attention to ultraviolet light.
The basic color is actually colorless puth shoes but within 30 seconds after exposure to sunlight will change shades from pink, orange and purple. This color change can last for 60 hours. Strange indeed, but I think this is a spray that can change the skin color of shoes for women, but still it is a good news.