Art Libre icons are now more or less done. I’ve followed this list and made all of the symbolic icons that were doable. A few icons that were heavily depended on color variations were omitted or the methapor was changed. Just one color means that the symbolic icons can be set by the theme using the “color” property. The advantage here is that they look good on any background and that perhaps content gets a little more attention. Jakub told me that all of them are not meant to be icons anyway, so I consider my task completed (some tweaks may still occur). All in all the symbolic Art Libre icon set contains 186 icons and will be used in high-contrast themes.
Next step: designing symbolic icons for Inkscape.