Rectangle.java
       [Rectangle.color, 20]
       [Rectangle.graphics2d, 21]
       [Rectangle.height, 23]
       [Rectangle.primaryColor, 24]
       [Rectangle.primaryColorAdapter, 26]
       [Rectangle.secondaryColor, 27]
       [Rectangle.secondaryColorAdapter, 28]
       [Rectangle.shape, 30]
       [Rectangle.shapeShadingType, 31]
       [Rectangle.stroke, 32]
       [Rectangle.width, 33]
       [Rectangle.x, 34]
       [Rectangle.y, 35]