public static void createIcons() {
		// Create a buffered image from the is not property image.
		Image isNotPropertyImage = ICON_IS_NOT_PROPERTY.getImage();
		BufferedImage isNotImage = new BufferedImage(TRUE_WIDTH, BUTTON_HEIGHT, BufferedImage.TYPE_INT_ARGB);
		Graphics2D gIsNotImage = isNotImage.createGraphics();
		gIsNotImage.drawImage(isNotPropertyImage,0,0,Outliner.outliner);
		
		// Create a buffered image from the is property image.
		Image isPropertyImage = ICON_IS_PROPERTY.getImage();
		BufferedImage isImage = new BufferedImage(TRUE_WIDTH, BUTTON_HEIGHT, BufferedImage.TYPE_INT_ARGB);
		Graphics2D gIsImage = isImage.createGraphics();
		gIsImage.drawImage(isPropertyImage,0,0,Outliner.outliner);
		
		// Lighten color to inherited versions
		RGBImageFilter lightenFilter = ImageFilters.getLightenFilter(0x00cccccc);
		FilteredImageSource isNotPropertyInheritedSource = new FilteredImageSource(isNotImage.getSource(), lightenFilter);
		FilteredImageSource isPropertyInheritedSource = new FilteredImageSource(isImage.getSource(), lightenFilter);
		Image isNotPropertyInheritedImage = Outliner.outliner.createImage(isNotPropertyInheritedSource);
		Image isPropertyInheritedImage = Outliner.outliner.createImage(isPropertyInheritedSource);
		
		ICON_IS_NOT_PROPERTY_INHERITED = new ImageIcon(isNotPropertyInheritedImage);
		ICON_IS_PROPERTY_INHERITED = new ImageIcon(isPropertyInheritedImage);
	}