User blog comment:Ultraprime2/Fairy Tail Wikia Podcast 10/5/2014/@comment-7418318-20140512185945/@comment-4829046-20140512193724

And actually Nick, the amount of pink-heads is greater than the red-heads in anime :/ Silver-hair sometimes falls under blonde too. It is much simpler to just keep it as is. Also red hair IRL is associated with Brunettes same way Silver is associated with blondes. The colour variation is mostly similar according to the mutation.