Thread:XiaolongNinja/@comment-3087943-20120719180418/@comment-4551377-20120729191554

Because that Black describes the color and form of it, just like in Black Lightning. If I had used the based word "kuro", that would be interloping the color as that of its name. Therefore it would have been called "Kurojoka" as one word instead of "Kuroi Joka" as two words.