void changeBackground() {
		String background = backgroundCombo.getText();
		if (background.equals(bundle.getString("White"))) {
			imageCanvas.setBackground(whiteColor);
		} else if (background.equals(bundle.getString("Black"))) {
			imageCanvas.setBackground(blackColor);
		} else if (background.equals(bundle.getString("Red"))) {
			imageCanvas.setBackground(redColor);
		} else if (background.equals(bundle.getString("Green"))) {
			imageCanvas.setBackground(greenColor);
		} else if (background.equals(bundle.getString("Blue"))) {
			imageCanvas.setBackground(blueColor);
		} else {
			imageCanvas.setBackground(null);
		}
	}