Surely someone can do better than this, but the spinning one looks broken to me, as if something snapped and it just began rotating violently. Why do some dots

Surely someone can do better than this, but the spinning one looks broken to me, as if something snapped and it just began rotating violently. Why do some dots have different shades if not to convey the same motion as the rotation? It might as well be any random image spinning on the page. Maybe it feels like there's a lack of intention?