A really stupid question to start the week: How do you change the color of the background in the viewport of DS 4.10? It has always been grey until I opened it up this morning and now it's white. Don't ask me why. It was fine when I closed it last night but this morning it opened glaringly white. I don't THINK it's the lights since it doesn't list any and the figure I loaded isn't washed out looking, but, to say I'm clueless, would be putting it kindly. Any hints will be most welcome.