This example adds borders between rows and between columns in the first table in the active document, and then it sets the colors for both the inside and outside borders.
If ActiveDocument.Tables.Count >= 1 Then
Set myTable = ActiveDocument.Tables(1)
With myTable.Borders
.InsideLineStyle = True
.InsideColor = wdColorBlueGray
.OutsideColor = wdColorPink
End With
End If
This example adds dark red borders between the first four paragraphs in the active document.
Set myDoc = ActiveDocument
Set myRange = myDoc.Range(Start:=myDoc.Paragraphs(1).Range.Start, _
End:=myDoc.Paragraphs(4).Range.End)
With myRange.Borders
.InsideLineStyle = wdLineStyleSingle
.InsideLineWidth = wdLineWidth150pt
.InsideColor = wdDarkRed
End With