Question to the lovely #opensource crowd.

I'm using #inkscape and needing to limit my colors for screenprinting. Is there any #libre #openSource software that takes an svg design and does something akin to the Newsprint plugin in #gimp to prep for screenprinting with 4 colors? docs.gimp.org/2.10/en/plug-in-…

Ideally preserving the SVG format?

Absent that, what's my best process here?