There's a lot to explain here because you are using the example code, you need to add rel="Example1"
attribute to your image tags. Each group of images must have a unique rel
attribute value and a corresponding jQuery hook:
Your jQuery code:
$("a[rel='example1']").colorbox(); // Choose the type of colorbox instance you like and replicate it
$("a[rel='example2']").colorbox();
If all your images on the page have the same rel
attribute value the colorbox instance will group all the images on your page into a slideshow.
<a href="images/floral/full-size/vegas-weddings-floral-1.jpg" rel="example1" title="Flower 1">
<a href="images/floral/full-size/vegas-weddings-floral-1.jpg" rel="example1" title="Flower 2">
<a href="images/floral/full-size/vegas-weddings-floral-1.jpg" rel="example1" title="Flower 3">
<a href="images/floral/full-size/vegas-weddings-floral-1.jpg" rel="example2" title="Flower 1">
<a href="images/floral/full-size/vegas-weddings-floral-1.jpg" rel="example2" title="Flower 2">
<a href="images/floral/full-size/vegas-weddings-floral-1.jpg" rel="example2" title="Flower 3">