diff --git a/shadowsocks-csharp/Resources/ssIn24.png b/shadowsocks-csharp/Resources/ssIn24.png
index 8e60412c..75af4c3a 100644
Binary files a/shadowsocks-csharp/Resources/ssIn24.png and b/shadowsocks-csharp/Resources/ssIn24.png differ
diff --git a/shadowsocks-csharp/Resources/ssOut24.png b/shadowsocks-csharp/Resources/ssOut24.png
index fe8902a8..4768ac87 100644
Binary files a/shadowsocks-csharp/Resources/ssOut24.png and b/shadowsocks-csharp/Resources/ssOut24.png differ
diff --git a/shadowsocks-csharp/View/LogForm.Designer.cs b/shadowsocks-csharp/View/LogForm.Designer.cs
index 1add4487..72b34263 100644
--- a/shadowsocks-csharp/View/LogForm.Designer.cs
+++ b/shadowsocks-csharp/View/LogForm.Designer.cs
@@ -268,11 +268,13 @@
             this.trafficChart.Palette = System.Windows.Forms.DataVisualization.Charting.ChartColorPalette.None;
             series1.ChartArea = "ChartArea1";
             series1.ChartType = System.Windows.Forms.DataVisualization.Charting.SeriesChartType.Line;
+            series1.Color = System.Drawing.Color.FromArgb(((int)(((byte)(255)))), ((int)(((byte)(128)))), ((int)(((byte)(0)))));
             series1.IsXValueIndexed = true;
             series1.Legend = "Legend1";
             series1.Name = "Inbound";
             series2.ChartArea = "ChartArea1";
             series2.ChartType = System.Windows.Forms.DataVisualization.Charting.SeriesChartType.Line;
+            series2.Color = System.Drawing.Color.FromArgb(((int)(((byte)(128)))), ((int)(((byte)(128)))), ((int)(((byte)(255)))));
             series2.IsXValueIndexed = true;
             series2.Legend = "Legend1";
             series2.Name = "Outbound";