diff --git a/Paint_2/ColorPicker.Designer.cs b/Paint_2/ColorPicker.Designer.cs
index 0db12e2..ad7a56b 100644
--- a/Paint_2/ColorPicker.Designer.cs
+++ b/Paint_2/ColorPicker.Designer.cs
@@ -28,6 +28,7 @@
         /// </summary>
         private void InitializeComponent()
         {
+            this.components = new System.ComponentModel.Container();
             this.pbxColor = new System.Windows.Forms.PictureBox();
             this.pbxSelectedColor = new System.Windows.Forms.PictureBox();
             this.nupRed = new System.Windows.Forms.NumericUpDown();
@@ -41,6 +42,7 @@
             this.label2 = new System.Windows.Forms.Label();
             this.label3 = new System.Windows.Forms.Label();
             this.label4 = new System.Windows.Forms.Label();
+            this.tmrRefresh = new System.Windows.Forms.Timer(this.components);
             ((System.ComponentModel.ISupportInitialize)(this.pbxColor)).BeginInit();
             ((System.ComponentModel.ISupportInitialize)(this.pbxSelectedColor)).BeginInit();
             ((System.ComponentModel.ISupportInitialize)(this.nupRed)).BeginInit();
@@ -160,7 +162,8 @@
             this.pbxSliderRed.Size = new System.Drawing.Size(255, 30);
             this.pbxSliderRed.TabIndex = 21;
             this.pbxSliderRed.TabStop = false;
-            this.pbxSliderRed.Click += new System.EventHandler(this.pbxSliderRed_Click);
+            this.pbxSliderRed.MouseDown += new System.Windows.Forms.MouseEventHandler(this.SliderMouseDown);
+            this.pbxSliderRed.MouseUp += new System.Windows.Forms.MouseEventHandler(this.SliderMouseUp);
             // 
             // pbxSliderSaturation
             // 
@@ -170,7 +173,8 @@
             this.pbxSliderSaturation.Size = new System.Drawing.Size(30, 255);
             this.pbxSliderSaturation.TabIndex = 22;
             this.pbxSliderSaturation.TabStop = false;
-            this.pbxSliderSaturation.Click += new System.EventHandler(this.pbxSliderSaturation_Click);
+            this.pbxSliderSaturation.MouseDown += new System.Windows.Forms.MouseEventHandler(this.SliderMouseDown);
+            this.pbxSliderSaturation.MouseUp += new System.Windows.Forms.MouseEventHandler(this.SliderMouseUp);
             // 
             // label1
             // 
@@ -208,6 +212,11 @@
             this.label4.TabIndex = 26;
             this.label4.Text = "A";
             // 
+            // tmrRefresh
+            // 
+            this.tmrRefresh.Interval = 1;
+            this.tmrRefresh.Tick += new System.EventHandler(this.tmrRefresh_Tick);
+            // 
             // ColorPicker
             // 
             this.AutoScaleDimensions = new System.Drawing.SizeF(10F, 22F);
@@ -266,5 +275,6 @@
         private System.Windows.Forms.Label label2;
         private System.Windows.Forms.Label label3;
         private System.Windows.Forms.Label label4;
+        private System.Windows.Forms.Timer tmrRefresh;
     }
 }
\ No newline at end of file
diff --git a/Paint_2/ColorPicker.cs b/Paint_2/ColorPicker.cs
index 7a15069..de58a0b 100644
--- a/Paint_2/ColorPicker.cs
+++ b/Paint_2/ColorPicker.cs
@@ -147,12 +147,19 @@ namespace Paint_2
         }
         private void pbxSliderRed_Click(object sender, EventArgs e)
         {
-            SelectedColor = Color.FromArgb(SelectedColor.A,pbxSliderRed.PointToClient(MousePosition).X,SelectedColor.G,SelectedColor.B);
+            int mouseX = pbxSliderRed.PointToClient(MousePosition).X;
+            if (mouseX >= 0 && mouseX <= 255)
+            {
+                SelectedColor = Color.FromArgb(SelectedColor.A, mouseX, SelectedColor.G, SelectedColor.B);
+            }
             RefreshUi();
         }
         private void pbxSliderSaturation_Click(object sender, EventArgs e)
         {
-            SelectedColor = Color.FromArgb(pbxSliderSaturation.PointToClient(MousePosition).Y, SelectedColor.R, SelectedColor.G, SelectedColor.B);
+            int mouseY = pbxSliderSaturation.PointToClient(MousePosition).Y;
+            if (mouseY >= 0 && mouseY <= 255) {
+                SelectedColor = Color.FromArgb(mouseY, SelectedColor.R, SelectedColor.G, SelectedColor.B);
+            }
             RefreshUi();
         }
         public static Color HexToColor(string rgb)
@@ -258,5 +265,21 @@ namespace Paint_2
         {
             main.sketch.ChangePaintToolColor(SelectedColor);
         }
+
+        private void tmrRefresh_Tick(object sender, EventArgs e)
+        {
+            pbxSliderSaturation_Click(sender, e);
+            pbxSliderRed_Click(sender,e);
+        }
+
+        private void SliderMouseDown(object sender, MouseEventArgs e)
+        {
+            tmrRefresh.Enabled = true;
+        }
+
+        private void SliderMouseUp(object sender, MouseEventArgs e)
+        {
+            tmrRefresh.Enabled = false;
+        }
     }
 }
diff --git a/Paint_2/ColorPicker.resx b/Paint_2/ColorPicker.resx
index 1af7de1..f1a0b40 100644
--- a/Paint_2/ColorPicker.resx
+++ b/Paint_2/ColorPicker.resx
@@ -117,4 +117,7 @@
   <resheader name="writer">
     <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
   </resheader>
+  <metadata name="tmrRefresh.TrayLocation" type="System.Drawing.Point, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a">
+    <value>17, 17</value>
+  </metadata>
 </root>
\ No newline at end of file