You don't need a sales process at all - you can get by with the simple status/update of an opp. The pipeline looks boring (all gray) simpler because SLX expects a sales process. If you don't want the overhead of doing that - you can modify this as shown below.
Now, the pipeline is colour based on the opp.status and not the sp status. Have fun !
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Pipeline Colouring
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To override the stage color order you can change the following VB script plug-in "Sales Dashboard:Pipeline Support" and exit out of the SetColorAndOrder sub routine.
Sub SetColorAndOrder(objRS)
--> Exit Sub
Dim i
Dim stageNumber
If objRS.RecordCount > 0 then
objRS.MoveFirst
End If
For i = 0 to objRS.RecordCount-1
stageNumber = GetStageNumber(objRS.Fields("NAME").Value) 'DNL
objRS.Fields("Order").Value = stageNumber 'DNL
objRS.Fields("Color").Value = GetStageColor(stageNumber) 'DNL
objRS.MoveNext
Next
objRS.Sort = "Order Asc, Name Desc" 'DNL
End Sub