How to Highlight Element In Java Selenium Example Program?

How to Highlight Elements In Java Selenium Example Program?

package com.selenium.basics;
import org.openqa.selenium.By;
import org.openqa.selenium.JavascriptExecutor;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.firefox.FirefoxDriver;
public class HighlightElement
{
   public static void Highlight_Element(WebDriver driver, WebElement element)
   {
      JavascriptExecutor js=(JavascriptExecutor)driver; 
      js.executeScript("arguments[0].setAttribute('style', 'background: yellow; border: 2px solid red;');", element);
      try 
      {
         Thread.sleep(1000);
      } 
      catch (InterruptedException e) 
      { 
         System.out.println(e.getMessage());
      }
      js.executeScript("arguments[0].setAttribute('style','border: solid 2px white');", element);
   }
   public static void main(String[] args) throws InterruptedException
   {
      WebDriver driver=new FirefoxDriver();
      driver.get("http://www.facebook.com");
      WebElement el=driver.findElement(By.xpath(".//*[@id='email']"));
      Highlight_Element(driver, el);
      Thread.sleep(5000);
      driver.close();
   }
}