diff --git a/Orange/widgets/evaluate/owcalibrationplot.py b/Orange/widgets/evaluate/owcalibrationplot.py
index 951951c588a..874ddd65eb4 100644
--- a/Orange/widgets/evaluate/owcalibrationplot.py
+++ b/Orange/widgets/evaluate/owcalibrationplot.py
@@ -162,6 +162,7 @@ class Information(widget.OWWidget.Information):
     fold_curves = settings.Setting(False)
     display_rug = settings.Setting(True)
     threshold = settings.Setting(0.5)
+    visual_settings = settings.Setting({}, schema_only=True)
     auto_commit = settings.Setting(True)
 
     graph_name = "plot"
@@ -564,8 +565,9 @@ def send_report(self):
         if self.score != 0:
             self.report_raw(self.get_info_text(short=False))
 
-    def set_visual_settings(self, *args):
-        self.plot.set_parameter(*args)
+    def set_visual_settings(self, key, value):
+        self.plot.set_parameter(key, value)
+        self.visual_settings[key] = value
 
 
 def gaussian_smoother(x, y, sigma=1.0):
diff --git a/Orange/widgets/visualize/owlineplot.py b/Orange/widgets/visualize/owlineplot.py
index 3bd4317bdf2..6a0447452a5 100644
--- a/Orange/widgets/visualize/owlineplot.py
+++ b/Orange/widgets/visualize/owlineplot.py
@@ -520,6 +520,7 @@ class Outputs:
     show_error = Setting(False)
     auto_commit = Setting(True)
     selection = Setting(None, schema_only=True)
+    visual_settings = Setting({}, schema_only=True)
 
     graph_name = "graph.plotItem"
 
@@ -855,8 +856,9 @@ def clear(self):
     def __in(obj, collection):
         return collection is not None and obj in collection
 
-    def set_visual_settings(self, *args):
-        self.graph.set_parameter(*args)
+    def set_visual_settings(self, key, value):
+        self.graph.set_parameter(key, value)
+        self.visual_settings[key] = value
 
 
 if __name__ == "__main__":
diff --git a/Orange/widgets/visualize/utils/widget.py b/Orange/widgets/visualize/utils/widget.py
index c2b325b2a91..57dca887e73 100644
--- a/Orange/widgets/visualize/utils/widget.py
+++ b/Orange/widgets/visualize/utils/widget.py
@@ -381,6 +381,7 @@ class Warning(OWProjectionWidgetBase.Warning):
 
     settingsHandler = DomainContextHandler()
     selection = Setting(None, schema_only=True)
+    visual_settings = Setting({}, schema_only=True)
     auto_commit = Setting(True)
 
     GRAPH_CLASS = OWScatterPlotBase
@@ -625,8 +626,9 @@ def _get_send_report_caption(self):
              "{} %".format(self.graph.jitter_size))))
 
     # Customize plot
-    def set_visual_settings(self, *args):
-        self.graph.set_parameter(*args)
+    def set_visual_settings(self, key, value):
+        self.graph.set_parameter(key, value)
+        self.visual_settings[key] = value
 
     @staticmethod
     def _get_caption_var_name(var):
@@ -664,8 +666,8 @@ class Error(OWDataProjectionWidget.Error):
         proj_error = Msg("An error occurred while projecting data.\n{}")
 
     def __init__(self):
-        super().__init__()
         self.projector = self.projection = None
+        super().__init__()
         self.graph.view_box.started.connect(self._manual_move_start)
         self.graph.view_box.moved.connect(self._manual_move)
         self.graph.view_box.finished.connect(self._manual_move_finish)