When I think back to Ridley Scott’s 1979 masterpiece, Alien, I’m amazed at how far the xenomorph species has come—from that unforgettable biomechanical black silhouette to a dazzling spectrum of colors that’s spanned nearly five decades of stories, games, and collectibles. While most of us first picture xenomorphs as having “a skeletal, biomechanical appearance” in shades of black, gray, blue, or bronze, I’ve discovered that their real chromatic diversity paints a much richer—and more complicated—picture than many might expect. In this article, I’m excited to walk you and myself through every documented color variation of xenomorphs across the entire Alien franchise. Whether you’re a researcher, a diehard fan, or a creator hungry for inspiration, together we’ll explore the full rainbow of science fiction’s most iconic endoparasitoid species. Let’s dive in!