It should work for the document body, but for more complex documents, use the following in place of
Selection.WholeStory
Selection.Font.Color = -587137025
Code:
Dim oStory As Range
For Each oStory In wdDoc.StoryRanges
oStory.Font.ColorIndex = wdBlack
If oStory.StoryType <> wdMainTextStory Then
While Not (oStory.NextStoryRange Is Nothing)
Set oStory = oStory.NextStoryRange
oStory.Font.ColorIndex = wdBlack
Wend
End If
Next oStory