Help with Conditional formatting

[Lt1205]

I have a template that I've created, which V-lookups data from one spreadsheet into the template.

I want to set up some conditional formatting that will highlight if any of the formulas in any cell change from being a formula (and displaying the value that the formula looks up) to being a value.

For example, one of the cells is for a price, and is currently looked up from another spreadsheet. If the person completing the template overwrites that value in the price cell, I want it to turn Blue (let's say).

Can anyone suggest anything? Thanks :)

[#2]

Use a formula to determine which cells to format, then this formula (Replace A1 with the cell you are checking of course), just check to see that it is a formula containing Vlookup:

=IFERROR(FIND("VLOOKUP",FORMULATEXT(A1)),0)=0