Change background color of image pop up only

[wcws]

At the bottom of the css file is this:

#popupShippingEstimator, #popupSearchHelp, #popupAdditionalImage, #popupImage, #popupCVVHelp, #popupCouponHelp, #popupAtrribsQuantityPricesHelp, #infoShoppingCart {
background-color: #ffffff;
}

Changing the color here changes all the popups. Is there a way to change the background color of only the popupimage page?
thank you,
Michael