Lightbox is dark

I am using the Sketch theme and I have several photo albums on there. Whenever I click on an image in the photo album, it pulls up a light box, but it darkens the entire screen.

Click on one of the images to see what I mean:

http://savagepunk.com/?easy-photo-album=cat-battle-armor

I would like the lightbox to not be dark. How can I fix this?

https://ww.wp.xz.cn/plugins/easy-photo-album/