Refrigerated Nutella is a tragedy. Then you have to try and put it in the microwave to soften it enough to spread it, then you overheat it and it goes grainy.
Dark and cool = cupboard, dark and cold = fridge.
But then, I don't keep ketchup in the fridge, and that does say on the bottle that you should. It's all a conspiracy to make you throw away good food and purchase more....