Как изменить цвет записи в форме?

Private Sub Form_Open(Cancel As Integer)
If [№ дела] Is Null Then [№ дела].BackColor = 8404992
End Sub
 
Private Sub №_дела_AfterUpdate()
If [№ дела] Is Null Then [№ дела].BackColor = 8404992
End Sub

If IsNull(Me.SNP) = False Then
    Me.SNP.BackColor = 15120000
Exit Sub
End If
    Me.SNP.BackColor = 255

Private Sub JOB_LostFocus()
   If IsNull(Me![JOB]) = True Or Me![JOB] = "" Or Me![JOB] = " " Then
    Me.JOB.BackColor = 13434828
Else
    Me.JOB.BackColor = 15120000
End If
End Sub

Public Sub CtrlBackColor(frm As Form)
Dim ctrl As Control
 
 
For Each ctrl In frm
    
    ctrl.BackColor = 255
    
Next ctrl
 
 
End Sub

[Поле].BackColor = 8421631 (шифр цвета)

For i = 1 To 20
Forms("Название_формы").Controls.Item("Поле" & i).BackColor = 255
Next i

Dim i As Control
For Each i In Me.Controls
    If TypeName(i) = "TextBox" Then
        i.BackColor = 255
    End If
Next i