Sub MakeBlack()
    Selection.Find.ClearFormatting
    Selection.Find.Replacement.ClearFormatting
    Selection.Find.Replacement.Font.Color = wdColorBlack
    With Selection.Find
        .Text = "*"
        .Replacement.Text = "^&"
        .Forward = True
        .Wrap = wdFindContinue
        .Format = True
        .MatchWildcards = True
    End With
    Selection.Find.Execute Replace:=wdReplaceAll
 End Sub