Sub UpdateDocuments()
Application.ScreenUpdating = False
Dim strFolder As String, strFile As String, wdDoc As Document, Rng As Range, Sctn As Section, HdFt As HeaderFooter
strFolder = GetFolder
If strFolder = "" Then Exit Sub
strFile = Dir(strFolder & "\*.docx", vbNormal)
While strFile <> ""
  If ThisDocument.FullName <> strFolder & "\" & strFile Then
    Set wdDoc = Documents.Open(FileName:=strFolder & "\" & strFile, AddToRecentFiles:=False, Visible:=False)
    With wdDoc
      For Each Rng In .StoryRanges
        Rng.Font.ColorIndex = wdBlack
      Next
      For Each Sctn In .Sections
        For Each HdFt In Sctn.Headers
          With HdFt
            If .LinkToPrevious = False Then .Range.Font.ColorIndex = wdBlack
          End With
        Next
        For Each HdFt In Sctn.Footers
          With HdFt
            If .LinkToPrevious = False Then .Range.Font.ColorIndex = wdBlack
          End With
        Next
      Next
      .Close SaveChanges:=True
    End With
  End If
  strFile = Dir()
Wend
Set wdDoc = Nothing
Application.ScreenUpdating = True
End Sub
 
Function GetFolder() As String
Dim oFolder As Object
GetFolder = ""
Set oFolder = CreateObject("Shell.Application").BrowseForFolder(0, "Choose a folder", 0)
If (Not oFolder Is Nothing) Then GetFolder = oFolder.Items.Item.Path
Set oFolder = Nothing
End Function