D3 symbols

[elymatos]

D3 has a set of symbols beyond the basic (circle, rectangle, hexagon). Is it possible to add a option to use these extra symbols?
Thanks,
Ely

[MrTomKimber]

If you draft a simple SVG image, and use the gravis.convert.image_to_data_url("yourshape.svg") you can achieve much the same result, but you don't get to set the colour from the metadata.