Key Takeaways Sunday puzzle solving activates the same neural networks that made childhood rainbow spotting feel like ...

From ruby red tuna to turquoise lingcod, the fish we eat can span the color spectrum. Flesh color can also tell us something about where a fish came from, its swimming routine and what it ate.

How many colors are in the rainbow? Seven said Sir Isaac Newton. Of course, Newton knew that a spectrum is just that, a continuous gradation from one color to another.

Hurricane season means the return of the color-coded weather map. But critics argue that the familiar spectrum of red to violet is confusing and ought to be replaced.

There are seven colors in all the makeup of the Bentley rainbow. One of the colors is called Dragon Red II that is a metallic red aiming to evoke a sense of speed and presence.