Option Explicit
Sub EnJaune()
Dim cel As Range, plg$, mot$
mot = [D1]: Application.ScreenUpdating = 0
For Each cel In [A4].CurrentRegion
If cel = mot Then plg = plg & cel.Address(0, 0) & ","
Next cel
If Len(plg) > 0 Then _
Range(Left$(plg, Len(plg) - 1)).Interior.Color = 65535
End Sub