Color is not claimed as a feature of the mark.
The mark consists of "welfox", a self created word, has no meaning.
The non-Latin characters in the mark transliterate to welfox and this means nothing in English. The non-Latin characters in the mark transliterate to welfox and this has no meaning in a foreign language.
The English translation of welfox in the mark is no meaning. The wording welfox has no meaning in a foreign language.