Sub test()
If t = 0 Then
Feuil1.Range("K9:K15,K17:K21,K23:K35").Interior.ColorIndex = 3
t = 1
Else
Feuil1.Range("K9:K15,K17:K21,K23:K35").Interior.ColorIndex = 1
t = 0
End If
tps = Now + TimeValue("00:00:01")
Application.OnTime EarliestTime:=tps, Procedure:="test"
End Sub