diff --git a/dfall_ws/src/dfall_pkg/GUI_Qt/flyingAgentGUI/src/csonecontrollertab.cpp b/dfall_ws/src/dfall_pkg/GUI_Qt/flyingAgentGUI/src/csonecontrollertab.cpp
index dc90b63b760f2c8f1667737b9e74c3d7916529a0..ebea9668c5f9a83a43f963edc69e04a0307996e0 100644
--- a/dfall_ws/src/dfall_pkg/GUI_Qt/flyingAgentGUI/src/csonecontrollertab.cpp
+++ b/dfall_ws/src/dfall_pkg/GUI_Qt/flyingAgentGUI/src/csonecontrollertab.cpp
@@ -82,6 +82,10 @@ CsoneControllerTab::CsoneControllerTab(QWidget *parent) :
     ui->chartView_for_x->chart()->addSeries(m_lineSeries_for_setpoint_x);
     ui->chartView_for_x->chart()->addSeries(m_lineSeries_for_measured_x);
 
+    // Set the style of the series
+    m_lineSeries_for_setpoint_x->setPen(QPen( QBrush("blue") , 5.0 ));
+    m_lineSeries_for_measured_x->setPen(QPen( QBrush("red")  , 5.0 ));
+
     // Set the initial axes limits
     ui->chartView_for_x->chart()->createDefaultAxes();
     ui->chartView_for_x->chart()->axisX()->setMin(-1.0);