The character's name has also drawn comment for its colour symbolism. In a 1976 essay titled "Racism in the English Language", Robert B. Moore cited "Captain Scarlet" as an example of black-and-white dualism, pointing out that while the character who leads the heroic Spectrum Organisation has the codename "White", the malevolent Mysterons use an agent called "Captain "Black"". Moore presented this as an example of how "symbolism of white as positive and black as negative is pervasive in our culture." When the series was repeated on BBC2 in the early 1990s, some commentators interpreted this colour opposition as having racist undertones. Gerry Anderson rejected this argument and pointed out that the series features heroic non-white characters in the form of Lieutenant Green, Melody Angel and Harmony Angel. Around this time, various newspapers reported that the Commission for Racial Equality (CRE) had filed a complaint against the BBC over the alleged racism of the names; the story was repetition of a baseless rumour started by a freelance reporter and was rejected by the CRE in its annual report. On black-and-white dualism, Guyanese actor Cy Grant, who voiced Lieutenant Green and praised the series for its multiculturalism, commented that "the 'darkness' of the Mysterons is most easily seen as the psychological rift — the struggle of 'good' and 'evil' — of the Western world as personified by Colonel White and his team. Dark and light are but aspects of each other. Incidentally, green is the colour of nature that can heal that rift."