Daecon's hair is pure white, but at the start of the story, before he even knew who or what he is, his hair was dyed blue. He dyed his hair because he thought white hair was weird for somebody in their early 20's, and he chose blue because he had no problems with being weird, he just wanted to be weird on his own terms:
After he completed his first successful shape shifting, though, when he reverted back to human the dye was gone and his hair was back to white. He also ditched the blue contacts to show his natural eye colours (Gold right, silver left):
Odd coloured hair and skin is common with the shapeshifters in the Defining Daecon universe. Jake here has blue hair and it's natural (his bird form is a blue jay):
And here you can see some of the odd colours in some background characters. All of these colours are natural, including the green skin on the fellow behind Jake - he is a one-off no-name character, but he would be a rare shapeshifter that changes into a reptile (his animal alternate is a Parsons Chameleon)
