diff --git a/src/rqt_plot/data_plot/pyqtgraph_data_plot.py b/src/rqt_plot/data_plot/pyqtgraph_data_plot.py
index b157c3e..0a22632 100644
--- a/src/rqt_plot/data_plot/pyqtgraph_data_plot.py
+++ b/src/rqt_plot/data_plot/pyqtgraph_data_plot.py
@@ -73,12 +73,13 @@ def __init__(self, parent=None):
         vbox.addWidget(self._plot_widget)
         self.setLayout(vbox)
         self._plot_widget.getPlotItem().sigRangeChanged.connect(self.limits_changed)
+        self._plot_widget.showGrid(x=True, y=True, alpha=1.0)
 
         self._curves = {}
         self._current_vline = None
 
     def add_curve(self, curve_id, curve_name, curve_color=QColor(Qt.blue), markers_on=False):
-        pen = mkPen(curve_color, width=1)
+        pen = mkPen(curve_color, width=2)
         symbol = "o"
         symbolPen = mkPen(QColor(Qt.black))
         symbolBrush = mkBrush(curve_color)