Thanks for pointing this out – I can see why it looks odd!
The sprites I used in the browser demo are licensed graphics, and I only used them to show how the system looks in action – not to copy your work.
Of course, the download version of my plugin includes no graphics at all – just the plugin itself, so everyone has to add their own sprites.
If it feels uncomfortable that I used those sprites in my demo, I’ll gladly swap them out for placeholders. I really don’t want to cause any trouble or make it look like I’m taking credit for something that isn’t mine.