Bgd behind the image preview?

Hi there. I'm sorry to bug you all but for the life of me I can not find the area on the stylesheet that tells the page what bgd to show under the image preview. I did a forum search but no luck.

http://ljgdesign.com
If you go to my page and click on any category and choose an item ... click the little preview image and the box opens to a larger image...see the green bgd behind it? I don't want that there but can not find where to change it on the stylesheet. I know it can be done because a friend of mine has a different bgd in her preview box than on her page - she just can not recall how she did it laugh
Can anyone help?
Thanks so much.

#popupImage
There should be 2 of them in the stylesheet. Look for the one with your background image, then change it to your liking.

Thank you so much..I think the reason I missed it was because there was NO bgd direction listed. It was pulling the main one by default I guess.
Anyways...I added the line to instruct it to pull another bgd of my choice.

Thanks so much.

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