Almost all dragons have some color in their beards, some more than others.
My first dragon Cisco had bright red as her beard color.
View media item 61045 which from what I've known, is a pretty rare color for beardies as I haven't seen nany other dragon with her colors since.
View media item 60599 Phoenix has Bright yellow and orange in her beard. And at first she had just a white colored beard.
View media item 60947
View media item 60983 Daisy despite being almost all gray and white on her body has a pretty bright salmon colored beard.
Loki has just a plain light yellow with some hints of orange in his beard. Mulder has orange, and Rocket still to this day has a all white beard. I don't have good pictures of their three's beards yet. Oh and Thor, my second ever Beardie had a light yellowish gray beard.
Maybe female beardies just have brighter beards than males? That's interesting.