Beard turning yellow

[Novathebeardie]

Recently i've noticed that Nova's beard has been turning a bit yellow in some places. It looks a bit like a pattern, so i'm wondering if it is just a yellow pattern coming through? Or if it could be a type of fungus? or something else? I'm not too worried at the moment, but i did want a second opinion
It doesn't feel raised or scabby, and i think it feels the same as the rest of his beard. He is getting a little bit of yellow on his shoulder area as well which you can see a little bit in the photo.

Sorry that the photo is sideways.

 

[SpacialCoogs]

It looks like a yellow scale pattern.

 

[Novathebeardie]

That's good to know I thought it would be something like that but wanted to see what others thought. I guess it's pretty normal for him to develop patterns as he grows.