Hmmm, you said FONT not cell so try this.

Private Sub Worksheet_Change(ByVal Target As Range)
If Target.Column < 4 Then Exit Sub
Target.Font.ColorIndex = 3 '4
End Sub

Regareds,
Howard

"reza" wrote in message
...
hi all,

i work with excel everyday, sometimes i forget which one i already changed
in that sheet.
i.e in column D, i have a values.
now every time i changes or update that column, the color of font will
change automatically maybe red, yellow or anything. at least i can know
the
changed.

many thanks for ur help

reza