Actually, I just found out that someone did:

http://hubblesite.org/reference_desk/faq/answer.php.id=93&cat=topten


Are the colors in Hubble images real?
There are no "natural color" cameras aboard the Hubble and never have been. The optical cameras on board have all been digital CCD cameras, which take images as grayscale pixels.

Sometimes the color is as natural as possible. However, the color given to the images is not just "artistic embellishment." The images are, indeed, downloaded as black and white, and color is added for a number of different reasons – for example, to show the dispersion detail of chemical elements and highlight features so subdued that the human eye cannot see them.

For more information, read The Meaning of Color on HubbleSite, which explains in detail how color is added to images.

HubbleSite and STScI are not responsible for content found outside of hubblesite.org and stsci.edu


>>http://www.dailymail.co.uk/pages/galleries/index.html?in_gallery_id=9139&in_image_id=302560&in_page_id=1055
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>If I didn't know any better, I'd say an artist painted them things.
>hmmm... maybe someone did. :-o