box.background_color = c.css.getStyle(box.getRealElement()).getBackgroundColor();
box.background_color = style.getBackgroundColor();
    public static Color getBackgroundColor(Context c, Box box) {        if (LayoutUtil.isBlockOrInlineElementBox(c, box)) {            if (box.background_color == null) {                if (c.css.getStyle(box.getRealElement()).isIdentifier(CSSName.BACKGROUND_COLOR)) {                    String value = c.css.getStyle(box.getRealElement()).getStringProperty("background-color");                    //u.p("got : " + obj);                    if (value.equals("transparent")) {                        box.background_color = new Color(0, 0, 0, 0);                        return box.background_color;                    }                }                box.background_color = c.css.getStyle(box.getRealElement()).getBackgroundColor();            }        }        return box.background_color;    }