Unless Ford does something strange, Rapid Red is already used on the 2020 Explorer. I visited my dealership to see it in person. I too would prefer a deeper red.Overall I think the red looks the best (it's what I reserved). But I think I'd like it just a bit better if it were a slightly darker shade.
But it also varies a lot depending on the lighting. In some pictures it looks darker. The pictures above kinda remind me of nail polish. ?