Hi, I am trying to use an IF function and conditional formatting all in one.

7 20
0 15
9 24

In the example above, I want to use =if('Q:\example\[accountlist.xlsx]systemsize'!$M10=0,b1,'Q:\example\[accountlist.xlsx]systemsize'!$M10)

The column A is getting a number from another workbook, but if it is zero, I want it to equal the number in column B. What I am wanting is if the original number in column A was zero, I want it to turn blue so that I know it was changed. Is it possible to do that without using another column?