title: make iframe google map black and white
body: <p>I have used a google map in iframe.</p>
  
  <pre><code>&lt;iframe width="425" height="350" frameborder="0" scrolling="no" marginheight="0" marginwidth="0" src="https://maps.google.co.in/maps?f=q&amp;amp;source=s_q&amp;amp;hl=en&amp;amp;geocode=&amp;amp;q=Madurai,+Tamil+Nadu&amp;amp;aq=0&amp;amp;oq=madursi&amp;amp;sll=10.782836,78.288503&amp;amp;sspn=5.674603,10.755615&amp;amp;ie=UTF8&amp;amp;hq=&amp;amp;hnear=Madurai,+Tamil+Nadu&amp;amp;t=m&amp;amp;z=12&amp;amp;ll=9.925201,78.119775&amp;amp;output=embed"&gt;&lt;/iframe&gt;&lt;br /&gt;&lt;small&gt;&lt;a href="https://maps.google.co.in/maps?f=q&amp;amp;source=embed&amp;amp;hl=en&amp;amp;geocode=&amp;amp;q=Madurai,+Tamil+Nadu&amp;amp;aq=0&amp;amp;oq=madursi&amp;amp;sll=10.782836,78.288503&amp;amp;sspn=5.674603,10.755615&amp;amp;ie=UTF8&amp;amp;hq=&amp;amp;hnear=Madurai,+Tamil+Nadu&amp;amp;t=m&amp;amp;z=12&amp;amp;ll=9.925201,78.119775" style="color:#0000FF;text-align:left"&gt;View Larger Map&lt;/a&gt;&lt;/small&gt;
  </code></pre>
  
  <p>How to display a google map in black and white color?</p>