Private Sub Worksheet_SelectionChange(ByVal Target As Range)
Dim iColor As Integer
On Error Resume Next
iColor = Target.Interior.ColorIndex
If iColor < 0 Then
iColor = 36
Else
iColor = iColor + 1
End If
If iColor = Target.Font.ColorIndex Then iColor = iColor + 1
Cells.FormatConditions.Delete
With Range("A" & Target.Row, Target.Address)
.FormatConditions.Add Type:=2, Formula1:="TRUE"
.FormatConditions(1).Interior.ColorIndex = iColor
End With
With Range(Target.Offset(1 - Target.Row, 0).Address & ":" & _
Target.Offset(-1, 0).Address)
.FormatConditions.Add Type:=2, Formula1:="TRUE"
.FormatConditions(1).Interior.ColorIndex = iColor
End With
End Sub