create/display and access multiple rectangles

i am just learning actionscript 3.
goal: i want to create and display multiple rectangles inside of  a group and at runtime access and change the rect properties like background color etc when the users' mouse clicks on a specific rectangle.

below is my first attempt to create a rectangle.  but then I couldn't access it after I added it to the group.


      var rect1:Shape = new Shape();
      var group:Sprite = new Sprite();

      rect1.graphics.lineStyle(1);
      rect1.graphics.beginFill(0x0000FF,1);
                     rect1.graphics.drawRect(100,30,75,50);
      rect1.rotation = 45;

                addChild(rect1);

                 group.addChild(rect1);

then I saw this method
var rect2:Rectangle = new Rectangle();

but that seems to just create something in memory and not display.  but it seems this constructor is good for me becuase it gives me methods like containPoints()

thanks.
       

             


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