Sub Macro111()
Dim Plage As Range
Dim Cellule As Range
Dim MotRechercher As String
MotRechercher = "["
For Each Cellule In Range("A1:M50")
If InStr(1, Cellule.Value, MotRechercher) > 0 Then
Range(Cellule.Address).Select
With Selection.Interior
.ColorIndex = 6 'jaune
.Pattern = xlSolid
End With
End If
Next Cell
End Sub