title: Generate QR codes with a logo or having background colors in Ruby
body: <p>I'm using <a href="https://github.com/whomwah/rqrcode" rel="nofollow noreferrer">rQrCode</a> for generating QR Codes in Ruby. But I want to change the background colors or add an image in the middle of that generated QR Codes. I did some research but found nothing.</p>
  
  <p>Have anyone implemented it in Ruby yet? Or do you have any idea about it?</p>
  
  <p>Thanks a lot.</p>