Let me first describe the situation I am trying to achieve.  I would like a hierarchical display with separate fonts and style details set programmatically on each grouping header.  There may be multiple columns being grouped.  I am using only one Band so using the GroupByRowStyle does not work for my situation.  I have tried using the InitializeGroupByRow event:

Private Sub USIGrid_InitializeGroupByRow(ByVal sender As Object, ByVal e As Infragistics.WebUI.UltraWebGrid.RowEventArgs) Handles Me.InitializeGroupByRow
e.Row.Cells(0).Style.BackColor = Drawing.Color.Azure
e.Row.Cells(0).Style.ForeColor = Drawing.Color.Black
End Sub

This was unsuccessful.  I have also tried using a programmatic approach on the preRender event:

For Each objRow In aobjRows
If TypeOf (objRow) Is Infragistics.WebUI.UltraWebGrid.GroupByRow Then
objRow.Style.CssClass = String.Empty
objRow.Style.CustomRules = CStr(aobjGroupFontInformation.Item(aintGroupByLevel))
SetGroupByStyles(objRow.Rows, aobjGroupFontInformation, aintGroupByLevel + 1)
End If
Next
End Sub

This also does not work.  I see that the row has the css values correctly in the object while rendering.  However the grid reflects none of the style changes that I have made.  Any suggestions?