CairoSVG
CairoSVG copied to clipboard
doesn't support feColorMatrix filter
how to add this filter
Short answer: it’s probably really, really difficult.
CairoSVG uses Cairo to paint, and Cairo provides some painting filters. Unfortunately, for technical reasons (mainly because it can generate both raster and vector formats), many filters are not included.
feColorMatrix is not included, and as far as I know it’s almost impossible to implement :unamused:.