Any reason why you want to do this by a Macro?

My first instinct would be to use conditional formatting (Format/Conditional
Formatting .. from the menu bar) on cell #1, wherein condition 1 would be
set to
=cell2_ref="Y"
(substitute actual cell2_ref or name of that cell as appropriate)
and set the foreground and background colours as desired by clicking on
Format button in the conditional format dialog box.

"David Campbell" <David wrote in message
...
I need a Macro in Excel that will change the color of cell #1 when a Y or
N
is entered into cell #2.