Change background for [help?], shipping calculator and when enlarging image. Help!

Hello everyone!
I'm having a problem with the logo. When I enlarge any image or open [help?] or shipping calculator, I have my logo from the main page as background. I had to switch off [help?] and shipping calculator because couldn't find where to change the background to plain. But it still shows when enlarging any image. It isn't very notisible untill you maximize the image window, but I want to remove it, doesn't look very proffecional like that. Pls help.
www.somewhereinthepast.com

Thanks in advance.

Thanks everyone,
I couldn't find it for a long time, onse I posted the thread, I found it straight away!
Just needed to add this in the custom css :

#popupShippingEstimator, #popupSearchHelp, #popupAdditionalImage, #popupImage, #popupCVVHelp, #popupCouponHelp, #popupAtrribsQuantityPricesHelp, #infoShoppingCart {
background-color: #ffffff;
background-image:none;
}

:clap: