With what product, specifically, did purple gradients land at Apple? Looking at the screenshots of Monterey it seems to me that the purple you see is probably f

With what product, specifically, did purple gradients land at Apple? Looking at the screenshots of Monterey it seems to me that the purple you see is probably from the desktop background, which is visible through the translucent UI elements. There are purple gradient elements on the web page itself, but I don't think that's particularly relevant to the actual software.