I wonder if this is partly responsible for the excellent color mastery that many romance language speakers seem to have.

As it happens, English color words may be especially difficult to learn, because in English we throw in a curve ball: we like to use color words “prenominally,” meaning before nouns. So, we’ll often say things like “the red balloon,” instead of using the postnominal construction, “the balloon is red.”

Why does this matter? It has to do with how attention works. In conversation, people have to track what’s being talked about, and they often do this visually. This is particularly so if they’re trying to make sense of whatever it is someone is going on about. Indeed, should I start blathering about “the old mumpsimus in the corner” you’re apt to begin discretely looking around for the mystery person or object.

Kids do the exact same thing, only more avidly, because they have much, much more to learn about. That means that when you stick the noun before the color word, you can successfully narrow their focus to whatever it is you’re talking about before you hit them with the color. Say “the balloon is red,” for example, and you will have helped to narrow “red-ness” to being an attribute of the balloon, and not some general property of the world at large. This helps kids discern what about the balloon makes it red.

via Why Johnny Can’t Name His Colors: Scientific American.