Row/column header background color

%3CLINGO-SUB%20id%3D%22lingo-sub-308526%22%20slang%3D%22en-US%22%3ERow%2Fcolumn%20header%20background%20color%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-308526%22%20slang%3D%22en-US%22%3E%3CP%3EUsing%20a%20thumb%20drive%2C%20I%20imported%20a%20large%20spreadsheet%20from%20PC%20Windows%2010%20Excel%202010%20version%2014.0%20to%20Excel%20for%20Mac%20Mojave%202019%20version%2016.20.%20The%20column%20letters%20and%20row%20numbers%20and%20sheet%20tabs%20all%20use%20a%20black%20background.%20The%20sheet%20tabs%20(excluding%20the%20current%20sheet)%20all%20use%20a%20dark%20gray%20font.%20The%20MacOS%20light%2Fdark%20appearance%20does%20not%20solve%20this%20issue.%20How%20can%20I%20change%20the%20background%20color%20to%20be%20more%20legible%3F%26nbsp%3B%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-LABS%20id%3D%22lingo-labs-308526%22%20slang%3D%22en-US%22%3E%3CLINGO-LABEL%3EExcel%20on%20Mac%3C%2FLINGO-LABEL%3E%3C%2FLINGO-LABS%3E%3CLINGO-SUB%20id%3D%22lingo-sub-1215856%22%20slang%3D%22en-US%22%3ERe%3A%20Row%2Fcolumn%20header%20background%20color%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-1215856%22%20slang%3D%22en-US%22%3E%3CP%3E%3CA%20href%3D%22https%3A%2F%2Ftechcommunity.microsoft.com%2Ft5%2Fuser%2Fviewprofilepage%2Fuser-id%2F260100%22%20target%3D%22_blank%22%3E%40Alpineskier%3C%2FA%3E%26nbsp%3BThis%20just%20happened%20today%2C%20same%20OS.%20I%20went%20to%3A%20Excel%20%26gt%3B%20Preferences%20%26gt%3B%20General%20%26gt%3B%20Personalize%20%26gt%3B%20checked%20box%20%22Turn%20off%20Dark%20Mode%22.%20It%20fixed%20it%20for%20me.%3C%2FP%3E%3C%2FLINGO-BODY%3E
Occasional Visitor

Using a thumb drive, I imported a large spreadsheet from PC Windows 10 Excel 2010 version 14.0 to Excel for Mac Mojave 2019 version 16.20. The column letters and row numbers and sheet tabs all use a black background. The sheet tabs (excluding the current sheet) all use a dark gray font. The MacOS light/dark appearance does not solve this issue. How can I change the background color to be more legible? 

1 Reply
Highlighted

@Alpineskier This just happened today, same OS. I went to: Excel > Preferences > General > Personalize > checked box "Turn off Dark Mode". It fixed it for me.