diff --git a/src/sweet_rviz_panel.cpp b/src/sweet_rviz_panel.cpp
index 1b5b6da..14a0cda 100644
--- a/src/sweet_rviz_panel.cpp
+++ b/src/sweet_rviz_panel.cpp
@@ -135,10 +135,19 @@ void SweetRvizPanel::initPlots()
   heading_plot_->yAxis->setRange(
     -0.5,
     0.5);
-  QPen heading_pen(Qt::red);
+  QPen heading_pen(Qt::blue);
   heading_pen.setWidth(3);
   heading_plot_->graph(0)->setPen(heading_pen);
   heading_plot_->legend->setVisible(true);
+
+  // bg color
+  QColor bg_color(240, 240, 240);
+
+  lateral_plot_->setBackground(bg_color);
+  heading_plot_->setBackground(bg_color);
+
+  lateral_plot_->axisRect()->setBackground(bg_color);
+  heading_plot_->axisRect()->setBackground(bg_color);
 }
 void SweetRvizPanel::onInitialize()
 {