Thread:Gsimenas/@comment-3551173-20150530170128/@comment-6697950-20150531153004

That's not a property, that's a template that makes it easier to change all the colours with one edit. The template can be found like any other template: Template:Themecolor. I've already adjusted it, but the character infobox isn't using it, so it has to be adjusted manually. Problem is, I don't really know where the colour is coded, since it's a complex template.