Looks like it is—they started out with the same color scheme just without the splashes [0], then changed the colors when someone recognized it. From the thread it sounds like an honest mistake (though one that probably warranted stronger corrective action than just changing the colors). They seem to have assumed that everything on icons8 [1] was up for grabs, when in fact a lot of trademarks are on there.
[0] https://github.com/webui-dev/webui/issues/100#issuecomment-1...
[1] https://icons8.com/