How do I shade a cell if its blank?

[pokdbz]

I have alot of records in a Excel file. Some cells are blank and I wanted to
color those cells. How would I go about doing this?

 

[Peo Sjoblom]

Select the range or sheet, then do format>conditional formatting, select
cell value equal to and use ="", click the format button and select grey and
click OK twice

 

[pokdbz]

How could I do this by making a Macro or writing it in VB. I have multiple
Excel files that I need to do this on.