A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
Hi,
Let's say this formula is in A1. Select A1 then:-
Home tab | conditional formatting | new rule | use a formula to decide which cells to format and enter this formula
=A1=FALSE
Click the format button | font tab | select a red colour from the colour dropdown and OK out. Change A1 in the formula to the correct cell address.