caption.borderColor Type: string

Default value: "#FFF"

Color of slider caption border (in rgb or html). Initially it's "#FFF". Note that if borderSize is 0 then it's a redundant attribute!

In this example, the caption of the left slider has a border with 4px and orange color, at the same time, the other one has a border with 1px and white color!

Important: Note that an object embedded is necessary to handle the caption options! And remember: don't forget to fill in the data-caption attribute of the tag img!