solved] How to realize invisible paths with visible markers? - InkscapeForum.com
Inkscape - Change the color of markers – Gordon Lesti
color - Alpha for node markers in Inkscape - Graphic Design Stack Exchange
Inkscape on Twitter: "Inkscape 1.2 highlight of the week: Have you discovered the new marker controls in #Inkscape 1.2? https://t.co/FiWgaE8p1I #ArtWithOpenSource #SVG #GraphicDesign https://t.co/B5YAWzfF4N" / Twitter
File:Svg example marker Inkscape.png - Wikimedia Commons