FancyBox problem with Mystique theme

Mystique has it’s own built in Lightbox and it looks like the one in your second link. The first link looks like the Fancybox for WP custom looks. If you want it to look like the first one you can disable it in Mystique settings > Advanced and click the third check box. When you have Fancybox configured it will take over the images and you have full control plus the looks like in your first image link.