diff --git a/script/BaseVertexDrawer.js b/script/BaseVertexDrawer.js
index 65ec6b8..a809bdb 100644
--- a/script/BaseVertexDrawer.js
+++ b/script/BaseVertexDrawer.js
@@ -67,8 +67,63 @@ function SelectedVertexStyle4()
 
 SelectedVertexStyle4.prototype = Object.create(CommonVertexStyle.prototype);
 
+function SelectedVertexStyle5()
+{
+	CommonVertexStyle.apply(this, arguments);
+
+	this.strokeStyle = '#FF6200';
+	this.mainTextColor  = '#FF6200';
+	this.fillStyle   = '#0F4FA8';
+}
+
+SelectedVertexStyle5.prototype = Object.create(CommonVertexStyle.prototype);
+
+function SelectedVertexStyle6()
+{
+	CommonVertexStyle.apply(this, arguments);
+
+	this.strokeStyle   = '#8CA336';
+	this.mainTextColor = '#8CA336';
+	this.fillStyle     = '#9C344C';
+}
+
+SelectedVertexStyle6.prototype = Object.create(CommonVertexStyle.prototype);
+
+function SelectedVertexStyle7()
+{
+	CommonVertexStyle.apply(this, arguments);
+
+	this.strokeStyle   = '#B59E22';
+	this.mainTextColor = '#B59E22';
+	this.fillStyle     = '#22387A';
+}
+
+SelectedVertexStyle7.prototype = Object.create(CommonVertexStyle.prototype);
+
+function SelectedVertexStyle8()
+{
+	CommonVertexStyle.apply(this, arguments);
+
+	this.strokeStyle   = '#08806C';
+	this.mainTextColor = '#08806C';
+	this.fillStyle     = '#CA980D';
+}
+
+SelectedVertexStyle8.prototype = Object.create(CommonVertexStyle.prototype);
+
+function SelectedVertexStyle9()
+{
+	CommonVertexStyle.apply(this, arguments);
+
+	this.strokeStyle   = '#AA8134';
+	this.mainTextColor = '#AA8134';
+	this.fillStyle     = '#492A73';
+}
+
+SelectedVertexStyle9.prototype = Object.create(CommonVertexStyle.prototype);
+
 var selectedGraphStyles = [new SelectedVertexStyle0(), new SelectedVertexStyle1(),
-	new SelectedVertexStyle2(), new SelectedVertexStyle3(), new SelectedVertexStyle4()];
+	new SelectedVertexStyle2(), new SelectedVertexStyle3(), new SelectedVertexStyle4(), new SelectedVertexStyle5(), new SelectedVertexStyle6(), new SelectedVertexStyle7(), new SelectedVertexStyle8(), new SelectedVertexStyle9()];
                    
 function BaseVertexDrawer(context)
 { 
diff --git a/script/plugins/Coloring.js b/script/plugins/Coloring.js
new file mode 100644
index 0000000..d4a3c14
--- /dev/null
+++ b/script/plugins/Coloring.js
@@ -0,0 +1,233 @@
+/**
+ * Default handler.
+ * Select using mouse, drag.
+ *
+ */
+function Coloring(graph, app)
+{
+    BaseAlgorithm.apply(this, arguments);
+    this.connectedComponentNumber = 0;
+    this.component = {};
+    this.selectedObjects = [];
+    this.MaxColor = 1000;
+}
+
+
+// inheritance.
+Coloring.prototype = Object.create(BaseAlgorithm.prototype);
+
+
+Coloring.prototype.getName = function(local)
+{
+    return local == "ru" ? "Раскраска графов" : "Graph coloring";
+}
+
+Coloring.prototype.getId = function()
+{
+    return "OlegSh.GraphColoring";
+}
+
+// @return message for user.
+Coloring.prototype.getMessage = function(local)
+{
+    return (local == "ru" ? "Найденное количество цветов " : "Color number is ") + this.connectedComponentNumber;
+}
+
+Coloring.prototype.result = function(resultCallback)
+{
+    this.calculate(true);
+    
+    var result = {};
+    result["version"] = 1;
+    this.selectedObjects = this.component;
+
+    return result;
+}
+
+Coloring.prototype.calculate = function(fillUpText = false)
+{
+    this.connectedComponentNumber = 0;
+    this.component = {};
+    connectedVertex = getVertexToVertexArray(this.graph, true);
+    
+    var listOfOrders = [];
+    this.addSimpleAndRandomOrders(listOfOrders);
+    this.addBasedOnDegree(listOfOrders, connectedVertex);
+    
+    this.connectedComponentNumber = this.MaxColor;
+    
+    // Find minimal variant.
+    for (var i = 0; i < listOfOrders.length; i++)
+    {
+        var coloringComponent = this.makeColoring(listOfOrders[i], connectedVertex);
+        if (coloringComponent["max"] < this.connectedComponentNumber)
+        {
+            this.component = coloringComponent;
+            this.connectedComponentNumber = coloringComponent["max"];
+        }
+    }
+    
+    // Fill Up text
+    for (var i = 0; i < this.graph.vertices.length; i++)
+    {
+        this.graph.vertices[i].upText = this.component[this.graph.vertices[i].id];
+    }
+    
+    //var result = {};
+    //result["version"] = 1;
+    //this.selectedObjects = this.component;
+
+    return this.connectedComponentNumber;
+}
+
+Coloring.prototype.makeColoring = function(vertexOrder, connectedVertex)
+{
+    var res = {};
+    var maxColor = 0;
+    
+    for (var i = 0; i < vertexOrder.length; i++)
+    {
+        var id = this.graph.vertices[vertexOrder[i]].id;
+        var hasColor = {};
+        if (id in connectedVertex)
+        {
+            // find color of neighbors.
+            for (var j = 0; j < connectedVertex[id].length; j++)
+            {
+                nearId = connectedVertex[id][j].id;
+                if (nearId in res)
+                {
+                    hasColor[res[nearId]] = 1;
+                }
+            }
+        }
+        
+        // find color for current vertex;
+        var color = 0;
+        for (var j = 1; j < this.MaxColor; j++)
+        {
+            if (!(j in hasColor))
+            {
+                color = j;
+                break;
+            }
+        }
+        res[id] = color;
+        maxColor = Math.max(maxColor, color);
+    }
+    
+    res["max"] = maxColor;
+    return res;
+}
+
+Coloring.prototype.addSimpleAndRandomOrders = function(listOfOrders)
+{
+    var vertexOrder = [];
+    for (var i = 0; i < this.graph.vertices.length; i++)
+    {
+        vertexOrder.push(i);
+    }
+    
+    // As in graph
+    listOfOrders.push(vertexOrder);
+    // Push some randoms
+    for (var i = 0; i < Math.floor(Math.sqrt(this.graph.vertices.length)); i++)
+    {
+        listOfOrders.push(this.shuffleArray(vertexOrder));
+    }
+}
+
+Coloring.prototype.addBasedOnDegree = function(listOfOrders, connectedVertex)
+{
+    var vertexDegree = [];
+    for (var i = 0; i < this.graph.vertices.length; i++)
+    {
+        var degree = 0;
+        var id = this.graph.vertices[i].id;
+        if (id in connectedVertex)
+        {
+            degree = connectedVertex[id].length;
+        }
+        
+        vertexDegree.push({index : i, degree : degree});
+    }
+    
+    // sort
+    vertexDegree.sort(
+        function(a, b) {
+            return (a.degree > b.degree) ? -1 : 
+                   ((b.degree > a.degree) ? 1 : 0);
+        });
+    
+    var vertexOrder = [];
+    for (var i = 0; i < vertexDegree.length; i++)
+    {
+        vertexOrder.push(vertexDegree[i].index);
+    }
+    
+    //console.log(vertexDegree);
+    
+    // Sorted by degree.
+    listOfOrders.push(vertexOrder);
+    
+    var shuffleLitle = vertexOrder.slice();
+    for (var i = 0; i < shuffleLitle.length - 1; i +=2)
+    {
+        var t = shuffleLitle[i];
+        shuffleLitle[i] = shuffleLitle[i + 1];
+        shuffleLitle[i + 1] = t;
+    }
+    
+    // Swap near.
+    listOfOrders.push(shuffleLitle);
+    
+    // shufl by half
+    if (vertexDegree.length > 1)
+    {
+        var pivotElement = Math.round(vertexOrder.length / 2);
+        var randomByPart = this.shuffleArray(vertexOrder.slice(0, pivotElement)).concat(this.shuffleArray(vertexOrder.slice(pivotElement)));
+        listOfOrders.push(randomByPart);
+        
+        // add with random pivots
+        for (var i = 0; i < Math.floor(Math.sqrt(this.graph.vertices.length)); i++)
+        {
+            var pivot = Math.floor(Math.random() * (vertexOrder.length - 2)) + 1;
+            
+            var randomByPart = this.shuffleArray(vertexOrder.slice(0, pivot)).concat(this.shuffleArray(vertexOrder.slice(pivot)));
+            listOfOrders.push(randomByPart);
+            //console.log(randomByPart);
+        }
+    }
+}
+
+Coloring.prototype.shuffleArray = function(a) 
+{
+    var j, x, i;
+    for (i = a.length - 1; i > 0; i--) {
+        j = Math.floor(Math.random() * (i + 1));
+        x = a[i];
+        a[i] = a[j];
+        a[j] = x;
+    }
+    return a;
+}
+
+Coloring.prototype.getObjectSelectedGroup = function(object)
+{
+    return (object.id in this.selectedObjects) ? this.selectedObjects[object.id] : 0;
+}
+
+Coloring.prototype.getPriority = function()
+{
+    return -9.7;
+}
+
+
+// Factory for connected components.
+function CreateColoring(graph, app)
+{
+    return new Coloring(graph)
+}
+
+// Gerister connected component.
+RegisterAlgorithm (CreateColoring);
diff --git a/script/plugins/MaxFlow.js b/script/plugins/MaxFlow.js
index 8bf7576..cac0d61 100644
--- a/script/plugins/MaxFlow.js
+++ b/script/plugins/MaxFlow.js
@@ -179,7 +179,7 @@ FindMaxFlow.prototype.getObjectSelectedGroup = function(object)
 
 FindMaxFlow.prototype.getPriority = function()
 {
-    return -9.7;
+    return -9.6;
 }
 
 // @return true, if you change resotry graph after use.
diff --git a/tpl/home.php b/tpl/home.php
index 0d966fa..7f7489c 100755
--- a/tpl/home.php
+++ b/tpl/home.php
@@ -10,7 +10,7 @@
 
         <script src="<?= Root('i/js/dev/jquery-ui.js')?>"></script>
 	<script src="<?= Root('i/js/dev/jquery.feedback_me.js')?>"></script>
-        <script src="<?= Root("script/example.js?v=4")?>" ></script>
+        <script src="<?= Root("script/example.js?v=5")?>" ></script>
     </head>
 <!--
 <div class="pull-right">