Comment 7 for bug 790534

Some comments:

> a) Script extension

Unfortunately, the extension is based on a code that might not be compatible with the GPLv2 license:
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The used Color Blind Simulation algorithm is copyright (c) 2000-2001 by Matthew Wickline ( http://matthew.wickline.org/ ) and the Human-Computer Interaction Resource Network ( http://hcirn.com/ ). For commercial licenses [of the original JavaScript code or derivative works thereof], please contact the Human-Computer Interaction Resource Network ( http://hcirn.com/ ).
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> b) SVG filter effects

The attached patch uses the filters as defined in the SVG file. No license issue here (openclipart), seems faster than the Python extension, but the result it not as accurate (everything is calculated in the RGB colorspace).

Comments are very welcome.