Change the properties of a userforn textbox based on the backcolor of a label

The code below is for a userform that is created at runtime. The form lists all of the possible selections that a user may chosen in the Data Entry sheet and he can enter the order he would like to see the results in a report sheet. I would like to improve the design of the form by changing the backcolor of the label of the unused items, clear and disable the corresponding textbox. The following code changes the backcolor but I am stumped getting to the corresponding textbox. Can anyone help?

Sub PrepUserform(num As Integer)
    
    '*******************************************************************
    '         Show the Active/Inactive data items
    '*******************************************************************
    Dim cell As Control, cell2 As Control
    Dim findItem As range
    Dim iNum As Integer
    Dim tbName As String
    
    ' Mark all Inactive labels, clear and disable the appropriate textbox
    For Each cell In UserForm1.Controls
        If Mid(cell.Name, 1, 1) = "L" Then
            If Not (cell.Name = "Label1" Or cell.Name = "Label2" Or cell.Name = "Label3") Then
                Set findItem = Sheet4.range("A1:A200").Find(cell.Caption)
                If findItem Is Nothing Then
                    cell.BackColor = &HFFC0C0
                     tbName = "TextBox" & Mid(cell.Name, 6, 1) - 3    'The textbox number is 3 less that the label number
                   ' Here is where I want to get the appropriate textbox to change its properties.
                End If
            End If
        End If
    Next cell
    
    'Show the form
   UserForm1.Show
    
End Sub