There are purple clothes, purple handbags, purple bicycles, purple furniture, even purple computers! But in the past, purple was a very expensive and unusual color.

In the study, participants were asked to search for red or green circles on a computer screen that showed circles in multiple colors.

The scientists' use of computer models that relate the level of UV protection achieved with three fabric dyes to their eff ects in changing the UPF of fabrics and other factors.