_vertices = new VertexPositionColor[]
            {
                new VertexPositionColor( new Vector3(1 , 1 , -1)    ,Color.Red),
                new VertexPositionColor( new Vector3(-1 , 1 , -1)   ,Color.Red),
                new VertexPositionColor( new Vector3(-1 , -1 , -1)  ,Color.Red),
                new VertexPositionColor( new Vector3(1 , 1 , -1)    ,Color.Red),
                new VertexPositionColor( new Vector3(-1 , -1 , -1)  ,Color.Red),
                new VertexPositionColor( new Vector3(1 , -1 , -1)   ,Color.Red),
                new VertexPositionColor( new Vector3(1 , 1 , 1)     ,Color.Green),
                new VertexPositionColor( new Vector3(1 , -1 , 1)    ,Color.Green),
                new VertexPositionColor( new Vector3(-1 , -1 , 1)   ,Color.Green),
                new VertexPositionColor( new Vector3(1 , 1 , 1)     ,Color.Green),
                new VertexPositionColor( new Vector3(-1 , -1 , 1)   ,Color.Green),
                new VertexPositionColor( new Vector3(-1 , 1 , 1)    ,Color.Green),
                new VertexPositionColor( new Vector3(1 , 1 , -1)    ,Color.Blue),
                new VertexPositionColor( new Vector3(1 , -1 , -1)   ,Color.Blue),
                new VertexPositionColor( new Vector3(1 , -1 , 1)    ,Color.Blue),
                new VertexPositionColor( new Vector3(1 , 1 , -1)    ,Color.Blue),
                new VertexPositionColor( new Vector3(1 , -1 , 1)    ,Color.Blue),
                new VertexPositionColor( new Vector3(1 , 1 , 1)     ,Color.Blue),
                new VertexPositionColor( new Vector3(1 , -1 , -1)   ,Color.Orange),
                new VertexPositionColor( new Vector3(-1 , -1 , -1)  ,Color.Orange),
                new VertexPositionColor( new Vector3(-1 , -1 , 1)   ,Color.Orange),
                new VertexPositionColor( new Vector3(1 , -1 , -1)   ,Color.Orange),
                new VertexPositionColor( new Vector3(-1 , -1 , 1)   ,Color.Orange),
                new VertexPositionColor( new Vector3(1 , -1 , 1)    ,Color.Orange),
                new VertexPositionColor( new Vector3(-1 , -1 , -1)  ,Color.Purple),
                new VertexPositionColor( new Vector3(-1 , 1 , -1)   ,Color.Purple),
                new VertexPositionColor( new Vector3(-1 , 1 , 1)    ,Color.Purple),
                new VertexPositionColor( new Vector3(-1 , -1 , -1)  ,Color.Purple),
                new VertexPositionColor( new Vector3(-1 , 1 , 1)    ,Color.Purple),
                new VertexPositionColor( new Vector3(-1 , -1 , 1)   ,Color.Purple),
                new VertexPositionColor( new Vector3(1 , 1 , 1)     ,Color.Yellow),
                new VertexPositionColor( new Vector3(-1 , 1 , 1)    ,Color.Yellow),
                new VertexPositionColor( new Vector3(-1 , 1 , -1)   ,Color.Yellow),
                new VertexPositionColor( new Vector3(1 , 1 , 1)     ,Color.Yellow),
                new VertexPositionColor( new Vector3(-1 , 1 , -1)   ,Color.Yellow),
                new VertexPositionColor( new Vector3(1 , 1 , -1)    ,Color.Yellow),
            };