Set point outline color correctly

The outline of the oval drawn now has the same color as the fill color
to display the whole point in this color.

point.py

@@ -38,7 +38,7 @@ class Point():
         center_y = height - (self.get_y() * (height / max_y))
         if center_x <= width and center_y <= height:
             canvas.create_oval(center_x - radius, center_y - radius, \
-                center_x + radius, center_y + radius, fill=color)
+                center_x + radius, center_y + radius, fill=color, outline=color)
         return center_x, center_y
 
 def get_random(min_x=0, max_x=100, min_y=0, max_y=100):