It took me a few days, but I can pretty much shift my perception at will at this point. (Just long enough for the topic to get knocked out of trending)
Now, when I see a thumbnail, it looks white until I focus, at which point the color saturates into royal blue/black. DH still cannot fathom how anyone could get a white/gold image out of the picture in the first place. I do think it looks better in the dark colors than the light ones.