Design View Properties

[Marbles]

Office 365. I've just noticed that that the Property Sheet, Navigation pane, Field Properties etc. have changed from white to a blue background. I can't see a way to change it back. Am I missing something.

 

[Micron]

Unless maybe you switched themes are you sure that your video card or monitor is not to blame? Mine looks the same as ever.

 

[Marbles]

No, I haven't changed anything, but the choices in Office Background and Office Theme have changed. Unfortunately none of the choices bring back the white background in the sections I've mentioned. Thanks for your help.

 

[Micron]

I suppose that other apps that should be showing white are doing so (e.g. Word page background) so that should rule out hardware issues.
I think that's all I've got for suggestions, even after Googling this myself. Please do post the solution if you find one.