I love Goliath's hair. Not only is it great hair, but it can also defy nature! It can do many things other people's hair can't do. For example...

It can turn lavender on command, as seen above...

Depending on his mood, it can turn either blue or lavender! Usually when he's confused, a lock of hair close to his skull will turn lavender, and when he's depressed, most of his hair will turn blue!

And as if that wasn't enough, it can also defy the laws of nature and move from being in front of his wings to his back! Blink and you'll miss it!

What else can he do? He can grow hair where none existed before! Like his brow spurs!

In conclusion... his hair is an enigma. He can do many things with his hair, but sadly, not all of them are in this episode. But oh, you'll see. You'll see. :P