Well, of course it is. Who would name a fruit after a colour? It only seems surprising because the colour is more mentally salient, so there's a cognitive bias

Well, of course it is. Who would name a fruit after a colour? It only seems surprising because the colour is more mentally salient, so there's a cognitive bias toward assuming it's the original (https://en.wikipedia.org/wiki/Availability_heuristic https://en.wikipedia.org/wiki/Availability_heuristic). By the way, "pink" is also named after a plant (https://en.wikipedia.org/wiki/Pink_%28flower%29 https://en.wikipedia.org/wiki/Pink_%28flower%29).