How to resize the colorbox lighbox?

Hi,

Thanks, this is a great plugin! Very neat admin interface. I have one small issue though, with resizing the colorbox lightbox window. My original images are 800px by 600px, but the lightbox is showing them at 300px by 170px. I couldn’t find the control settings for this. What can I do?

Thanks in advanced for your help.

Best,

https://www.ads-software.com/extend/plugins/camera-slideshow/