How to get rid of colour banding on subreport?

[degras]

I have a report with a subreport and I am trying to get rid of the alternating colour banding with the following code:

Private Sub Detail_Format(Cancel As Integer, FormatCount As Integer)
Me.Detail.BackColor = vbWhite
End Sub

... but it is not having any effect and I still get banded rows on the subreport.