he vertices to "uncolored."

<P>
<PRE>
namespace boost {
  template &lt;class VertexListGraph, class Order, class Color&gt;
  typename graph_traits&lt;VertexListGraph&gt;::vertices_size_type
  sequential_vertex_color_ting(const VertexListGraph&amp; G,
    Order order, Color color)
  {
    typedef graph_traits&lt;VertexListGraph&gt; GraphTraits;
    typedef typename GraphTraits::vertex_descriptor vertex_descriptor;
    typedef typename GraphTraits::vertices_size_type size_type;
    typedef typename property_