You know, even another one, probably faster ...
<font face=Tahoma New><SPAN style="color:#00007F">Option</SPAN> <SPAN style="color:#00007F">Explicit</SPAN>
<SPAN style="color:#00007F">Sub</SPAN> ColorSpecialCells()
<SPAN style="color:#00007F">With</SPAN> Range("A2:E10")
.SpecialCells(xlCellTypeFormulas, 23).Interior.ColorIndex = 8
<SPAN style="color:#00007F">End</SPAN> <SPAN style="color:#00007F">With</SPAN>
<SPAN style="color:#00007F">End</SPAN> <SPAN style="color:#00007F">Sub</SPAN>
</FONT>
I am partial to looping through cells as Dan has, there's always just so much you can do. These should all work though.
(Hey Dan! Howzit!!)