Color of workspace turns black?

[Sparkle101]

Have had PE 11 for many years, no problem.  Yesterday the following started:

When I open a photo in Editor, the color of the workspace turns black.  If I open  RAW file in Camera RAW, it does not, but anything opened in editor does. 

[MichelBParis · Accepted solution]

In Windows,

Right click on any point of the black background surrounding your image in the document window.

Do you get a drop-down menu to choose the color of that surrounding space?

I suppose there is an equivalent ot the right click in Macs.

[Sparkle101]

Thank you!!! It worked.