Is there a way to change the framing color of images on the website?

My question:

Is there a way to change the framing color in web view to something neutral like white or grey?

 

The backstory:

I always view Dropbox on my iOS app but I had a client complain about artifacting on images delivered (another issue for another thread) so I went to the website to see what they might be seeing.

 

I noticed that all of the images were "framed" with a warm beige-ish color instead of a neutral. This happened in both thumbnail views as well as individual image view.

 

The client also complained that the images weren't warm enough. I am concerned that the warm color framing the photos changes their perception of how warm they are. I edit all my images with a neutral framing color (whether that is white, black or grey) so it is as versatile and accurate as possible.