Changing the color of selected pixel in Image
<p>I want to make the black line of the image into red or any other color.</p>

<p><img src="http://i.stack.imgur.com/U1aeJ.png" alt="enter image description here"></p>

<p>Or can say want to generate the colourful QR code.
Is this possible??
Please help me.
It is urgent.</p>

<p>Thanks in advance</p>
