https://www.theregister.co.uk/2018/10/24/phaethon_meteorite/

3200 Phaethon, a weird object that sends cosmic debris streaking through Earth's night skies during the Geminid meteor shower, is more puzzling than previously thought.

For starters, Phaethon appears to be blue. When the researchers viewed the object using telescopes in Hawaii and Arizona, USA, they found that it reflected more sunlight in the wavelengths that correspond to blue light rather than the typical red and dark grey colors for most asteroids.