A further quote from Manuals of Style this time from the section which directly addresses the issue of mixed or non capitalised For trademarks that are given in mixed or non capitalization by their owners such as adidas follow standard English text formatting and capitalization rules The mixed or non capitalized formatting should be mentioned in the article lead or illustrated with a graphical logo Standard English text formatting and capitalisation rules would render GReeeeN as Greeeen plain and simple It s not even possible to use CamelCase as a defence as it s capitalisation for capitalisations sake within a single word I m not quite sure how much clearer I can make this