I know I'm asking too much, but could you give me your example project
Please make a ZIP file of all of your plugin and QLed code, including the SVG files used for drawing the LEDs - basically, everything I need to build your plugin and use it. Source code only, no compiled binary files. I don't have time to create a new plugin, but I can work on your code to try to get it working. You can attach the ZIP file to a reply in this forum.