I never knew how to do that. Never looked into it. Only saw it on youtube a couple times. Assumed it was a hack since it was a hacker's video.
That system used to be handled entirely by us, so we added in some cool stuff. It is now handled entirely by the Wii U OS, so we're not in the same postition to edit it.
We miss it too.
i do remeber quantom (COD engine) where you had to put the ^6 thing on your mii name for different colors =)
can it be put in the clan tag?
Other consoles actually do have it. It's how hackers get their colored names. But I dunno why the colors aren't aloud to be selected for Create-a-Class