diff --git a/testclient/widgets/plotwidget.cpp b/testclient/widgets/plotwidget.cpp
index 4fa7763..55a762b 100644
--- a/testclient/widgets/plotwidget.cpp
+++ b/testclient/widgets/plotwidget.cpp
@@ -1,99 +1,102 @@
 /* Atelier KDE Printer Host for 3D Printing
     Copyright (C) <2016>
     Author: Patrick José Pereira - patrickelectric@gmail.com
 
     This program is free software; you can redistribute it and/or
     modify it under the terms of the GNU General Public License as
     published by the Free Software Foundation; either version 3 of
     the License or any later version accepted by the membership of
     KDE e.V. (or its successor approved by the membership of KDE
     e.V.), which shall act as a proxy defined in Section 14 of
     version 3 of the license.
 
     This program is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
 #include <QChart>
 
 #include "plotwidget.h"
 
 PlotWidget::PlotWidget(QWidget *parent) :
     QWidget(parent)
 {
     _chart = new QChartView;
+    if (palette().text().color().value() >= QColor(Qt::lightGray).value()) {
+        _chart->chart()->setTheme(QChart::ChartThemeDark);
+    }
     QHBoxLayout *mainLayout = new QHBoxLayout;
     mainLayout->addWidget(_chart);
     this->setLayout(mainLayout);
 
     newPlot(tr("Actual Bed"));
     newPlot(tr("Target Bed"));
     // The extruder need to be added after some signal emitted (ExtruderCountChanged)
     newPlot(tr("Actual Ext.1"));
     newPlot(tr("Target Ext.1"));
     update();
 }
 
 void PlotWidget::newPlot(QString name)
 {
     // Create a new plot
     _name2Index[name] = _plots.size();
     plot _newPlot;
     _newPlot.setName(name);
     _plots.append(_newPlot);
 }
 
 void PlotWidget::deletePlot(QString name)
 {
     _plots.remove(_name2Index[name]);
     _name2Index[name] = -1;
 }
 
 void PlotWidget::appendPoint(QString name, float value)
 {
     _plots[_name2Index[name]].pushPoint(value);
 }
 
 void PlotWidget::update()
 {
     static bool firstTimeCheck = true;
     static QDateTimeAxis *axisX = new QDateTimeAxis;
     static QValueAxis *axisY = new QValueAxis;
 
     // After already executed, update time axis
     if (firstTimeCheck == false) {
         _chart->chart()->axisX()->setRange(QDateTime::currentDateTime().addSecs(-120), QDateTime::currentDateTime());
         return;
     }
 
     firstTimeCheck = false;
 
     axisX->setTickCount(3);
     axisX->setFormat(QStringLiteral("hh:mm:ss"));
 
     axisY->setLabelFormat(QStringLiteral("%d"));
     axisY->setTitleText(tr("Temp."));
 
     _chart->chart()->addAxis(axisY, Qt::AlignLeft);
     _chart->chart()->addAxis(axisX, Qt::AlignBottom);
 
     _chart->chart()->axisY()->setRange(0, 3e2);
     _chart->chart()->axisX()->setRange(QDateTime::currentDateTime().addSecs(-120), QDateTime::currentDateTime());
 
     for (auto plot : _plots) {
         _chart->chart()->addSeries(plot.serie());
         plot.serie()->attachAxis(axisY);
         plot.serie()->attachAxis(axisX);
     }
 
     _chart->setRenderHint(QPainter::Antialiasing);
 }
 
 PlotWidget::~PlotWidget()
 {
 }