[racket] how can I change image's tint?

If you need to see an image of what I am talking about...I have uploaded one
here

http://img193.imageshack.us/img193/7616/22675416.png

Hope this is useful.

-- 
Mathew Kurian
Seven Lakes High School
Cell: 8324932862 | Home: 2814929526
Do all the good you can, by all the means you can,
In all the ways you can, in all the places you can,
At all the times you can, to all the people you can,
As long as ever you can." :) John Wesley
*Please be sure to visit SLHS Red Cross Association<http://www.slhsredcross.com>
*
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