diff --git a/remote_control/aruco_estimator.py b/remote_control/aruco_estimator.py
index acd9040..ca543f5 100644
--- a/remote_control/aruco_estimator.py
+++ b/remote_control/aruco_estimator.py
@@ -140,7 +140,7 @@ class ArucoEstimator:
             {'name': 'Draw grid', 'type': 'bool', 'value': self.draw_grid, 'tip': "Draw grid spanned by the markers 0 - 3"},
             {'name': 'Grid columns', 'type': 'int', 'value': self.grid_columns, 'tip': "Number of columns for the grid"},
             {'name': 'Grid rows', 'type': 'int', 'value': self.grid_rows, 'tip': "Number of rows for the grid"},
-            {'name': 'Display mode', 'type': 'list', 'values': ['color', 'grayscale'], 'value': 'color', 'tip': "Display mode for the video"},
+            {'name': 'Display mode', 'type': 'list', 'values': ['color', 'grayscale'], 'value': 'grayscale', 'tip': "Display mode for the video"},
             {'name': 'Autoexposure', 'type': 'bool', 'value': True},
             {'name': 'Controlled robot', 'type': 'list', 'values': self.robot_marker_ids, 'tip': 'Robot to control'},
             RobotMarkerGroup(name="Robot markers", children=robot_marker_group),
@@ -569,4 +569,4 @@ if __name__ == "__main__":
     import sys
 
     if (sys.flags.interactive != 1) or not hasattr(QtCore, 'PYQT_VERSION'):
-        QtGui.QApplication.instance().exec_()
\ No newline at end of file
+        QtGui.QApplication.instance().exec_()