JS SWT

        browser.addProgressListener(new ProgressAdapter() {
            @Override
            public void completed(ProgressEvent event) {
                Color back = tabFolder.getBackground();
                browser.execute("document.body.style.background = 'rgb("
                        + back.getRed() + ", " + back.getGreen() + ", "
                        + back.getBlue() + ")';");

                FontData fontData = Display.getCurrent().getSystemFont()
                        .getFontData()[0];
                browser.execute("for ( i = 0; i < document.all.length; i++) {"
                        + "document.all[i].style.fontFamily = \""
                        + fontData.getName() + "\";"
                        + "document.all[i].style.fontSize = "
                        + fontData.getHeight() + ";" + "}");
            }
        });