The script accepts the following parameters:
svg - the SVG to load. Either an image in the img directory next to the
script or a media file id. ACLs are checked
f - wanted fill color
s - wanted stroke color
fh - wanted fill color on hover
sh - wanted stroke color on hover
Colors are to be given in hex in the following formats:
RGB
RRGGBB
RRGGBBAA
What's missing:
* being able to define what is styled, currently hardcoded to 'path'
elements only
* caching - no need to do all the processing every time
* background setting - that would require wrapping an additional <g>
or <rect> element around all content and style. I'm not sure how to do
that best.
* unit tests
