Board Thread:Support Requests - Getting Technical/@comment-25152698-20170506043228/@comment-27345308-20170506055400

What One Piece Wiki did is add  in their character box infobox, so when you use their Char Box template like  it puts a   class onto their infobox, so they can style portable infoboxes of this structure by putting (like Vanguards did for them in Themes.css).

If you wanted to change it for every infobox and not have a specified amount of themes, I think you can read this blog post. Although I wasn't able to change the color of &lt;data> elements with accents in my tests, I hope you will have more luck with it.