Urgent Help Needed

[Rampton]

I was working when all of a sudden my entire workbook turned grey, including the headers, toolbars, etc. Everything is still functional, but I can no longer use conditional formatting because there are no colors. (I can use the buttons and functionality, just can't see any colors anywhere.) My work relies on a list of conditional formats. I've cleared them, closed Excel, opened other workbooks, quit the application & reopened, etc. Nothing fixes the issue. Any help is greatly appreciated!

 

[mole999]

first thing has to be a system restart, which excel version, then i would look at how many cf are set up