Add a note about setting the color

blink1073 · blink1073 · commit 3e3d9bdce3bc · 2016-11-19T06:01:05.000-06:00
diff --git a/examples/widgets/painter.py b/examples/widgets/painter.py
@@ -32,4 +32,5 @@ def callback(x, y):
 
 # Create the painter tool and show the plot.
 p = Painter(ax, callback)
+p.label = 1  # set the color
 plt.show()
