A Sass utility to produce duplicate CSS with many different colors. Let's say you've got six elements, and you want each one to have a different set of colors. You might write CSS like this:
.box:nth-child(1){color:red;}
.box:nth-child(1){color:#a06000;}
.box:nth-child(1){color:#c04000;}
.box:nth-child(1){color:#df2000;}
.box:nth-child(1){color:purple;}
candy.css streamlines this down to one chunk of CSS. You tell the mixin what the start and end colors of the gradient, and how many elements you need.