“You’ll often find me using a fluorescent orange in unexpected ways," she says. "It’s no surprise that my Dutch heritage plays a role — orange being the country’s official color makes it ...

The most striking feature of these cave crocodiles is their vibrant orange color. While crocodiles are usually grayish-green, these reptiles display an almost fluorescent orange hue. The reason?

Figure 1: The fluorescent protein color palette has expanded ∼140 nm into longer wavelengths over the past 15 years to include many new variants in the orange, red and far-red spectral regions.