refers to clothing worn during the 80s that would change with temperature of your body.
B.U.M Equipment made hyper-color shirts the in-thing in the 1980s.
by Ixy July 29, 2003
A brand of shirt popular in the early 1990's that would change color when exposed to heat.
It was creepy when random people would come up to you an blow on your hypercolor shirt to make it change colors in the 1990's, but it made you cool.
by ILoveThom'sChickenDance December 01, 2003