From my understanding the difference lies in the object/animal chosen to describe the colour wrt. to the situation. You’d use the red parrot if I may say to de

From my understanding the difference lies in the object/animal chosen to describe the colour wrt. to the situation. You’d use the red parrot if I may say to describe an angry wordy person becoming red of anger. And you’d use another object/animal to describe the exact same colour in another context. Say red frog for your shining new prince or whatever.