how do I get a the colour of the pixel I just touched
<p>I have two images and one goes on top of the other. The bottom one is a floor plan and the above image is the same image but all of the rooms have been coloured in with different colours. The top image is then made invisible. I want to get the colour of the area that was touched so that I know where users want to go. </p>

<p>I don't know if this can be done and if you know of another way to make an area clickable I'd love to hear it.</p>
