small changes

TestWinFormsDataVis/Form1.cs

@@ -18,7 +18,7 @@ namespace TestWinFormsDataVis
 
         Pen myPen = new Pen(Color.Black);
         Pen myCPenR = new Pen(Color.Red);
-        Pen myCPenG = new Pen(Color.Green);
+        Pen myCPenG = new Pen(Color.Blue);
         Graphics g = null;
 
         List<StraightLine> koordCross = new();