Right, I recently read through the regulations in the Netherlands regarding e-cigs, and I came across something rather interesting. "It is forbidden to add additives that give colour to the emissions". In easy words, you can't add anything to the juice that colours the vape. But now I wonder, is there actually such a thing possible? It seems silly to add something to a law that isn't even possible, but maybe out of precaution? Just wondering if such juice actually exists. Posted this in General e-liquid Discussion because I am specifically aiming at juice, rather than that law.