Sub Macro_Rougissante()
MakeMe_Red ActiveSheet.UsedRange, "toto"
End Sub
Private Sub MakeMe_Red(Vamos_A_LA_Playa As Range, LeMot As String, Optional PurpleRainOrNOt As XlColorIndex = 3)
Dim c As Range
Application.ScreenUpdating = False
For Each c In Vamos_A_LA_Playa
If InStr(c.Value, LeMot) > 0 Then
c.Characters(InStr(c.Value, LeMot), Len(LeMot)).Font.ColorIndex = PurpleRainOrNOt
End If
Next c
End Sub