Converting Specific Colours on Image to Pure Black colour

Avg Bid (NZD)
Project Budget (NZD)
$30 - $250

Project Description:
In need help in converting specific colours (based on hex code or rgba) on an image to Pure Black colour (#000). E.g. Here is a colour page - -> need a script to turn it into -> pure black colour not greyscale ->

Note the Pink colour should not be converted to black as we have not specified it to change colour to black.

I will be using it in a Phonegap solution so it needs to be based on javascript not flash.


Skills required:
CSS, HTML5, Javascript, jQuery / Prototype, PhoneGap
Additional Files: blacknwhite.png colours.png
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