Color is not claimed as a feature of the mark.
The mark consists of a rectangular box above the words ROHTO HADA LABO. The characters with the black background above the words ROHTO HADA are Japanese Kanji characters; the characters above the word ROHTO read "hada", and the characters above the word HADA read "ken". The vertical characters with the white background above the word LABO are Japanese Katakana characters which read "Hada Labo".
The non-Latin characters in the mark transliterate to hada and ken and this means skin and research or laboratory in English.
The English translation of HADA LABO in the mark is skin lab. The wording ROHTO has no meaning in a foreign language.