http//www.chessvariants.com/cgi-bin/fen2.php is the SVG rendering engine used by the 'Diagram Editor with Scalable Graphics', where you can request PNG images of individual pieces that exist in SVG sets on this website, of arbitrary size and color (on transparent background), or entire board diagrams of positions containing such pieces.
http//www.chessvariants.com/cgi-bin/fen2.php is the SVG rendering engine used by the 'Diagram Editor with Scalable Graphics', where you can request PNG images of individual pieces that exist in SVG sets on this website, of arbitrary size and color (on transparent background), or entire board diagrams of positions containing such pieces.
E.g. http://www.chessvariants.com/cgi-bin/fen2.php?s=200&w=00ff00&p=wbadger shows