I just noticed that if I link to the image with no variables in the hyperlink it will display the image.
[wp_colorbox_media url="https://url" type="iframe" hyperlink="https://url/wp-content/uploads/2015/01/image.png"]
What I would like is to be able to make it into a roll over, how can I do this? I have an image class for mouseover, could your script accept custom in the hyperlink section?
<img class="mouseover" title="title" src="https://url/wp-content/uploads/2015/01/imagerollover1.png" alt="title" oversrc="https://url/wp-content/uploads/2015/01/imagerollover2.png" />