Can't get the BackColor of labels on a subform to reflect the new color--- even after I first changed BackStyle to "1" and repainted the form

Question

I am stumped as to why the BackColor for labels on an MS Access subform will not update visually. I wrote some code to change the BackStyle to "1" first, then changed the color of BackColor. I ran tests and found that the BackStyle and BackColor have actually been updated in the system, but not in the Property Sheet--- which still shows BackStyle as "0" and BackColor as the default color. The color of the label on the subform also retains the default color. I also get no error messages, but that doesn't mean I'm not royally messing something up. I even tried to repaint the form to see if that would do the trick, but to no avail. Here is the simple code below:

Dim frm As Form
Dim ctl As Control


Set frm = Me![subfrm_Review Forecast Totals].Form

For Each ctl In frm.Controls

    If ctl.ControlType = acLabel And ctl.Name = "2020-12-25_Label" Then    
       
        ctl.BackStyle = 1
        ctl.BackColor = vbGreen      
                    
    End If

Next ctl

Me.Repaint

End Sub