Bonjour ben et le forum,
Essaye ceci :
Sub Coloration()
Dim oRge As Range
Dim iRow As Integer
Dim oWsh As Worksheet
For Each oWsh In ThisWorkbook.Worksheets
iRow = oWsh.Range("A65536").End(xlUp).Row
For Each oRge In oWsh.Range("T1:T" & iRow)
If IsEmpty(oRge) Then
oRge.Interior.ColorIndex = 6
End If
Next oRge
Next oWsh
End Sub
Slts
wally