Before the rainbow was used, red, gold, and green were colors used to display gay pride in the 80s.
Is this true?
The linked Genius annotation seems to be the source of this claim - it was posted in September 2012 by a user with no other contributions to the site, and has since been copied verbatim to other places, such as Quora.
It's hard to prove a negative, but searching has not turned up any other mention of "red, gold, and green" being used as a gay pride symbol. Multiple respondents to the Genius annotation have also been unable to verify it:
I won’t say it`s wrong, but I looked for it, and I couldn’t find anithing [sic] about that or a picture of the flag, where did you get this info?
A red, gold, and green flag is, however, one of the symbols of the Pan-African movement. A more common claim - posted twice on the Quora thread, and as a proposed edit on Genius - is that Boy George was attempting to draw a parallel between the struggle for racial equality and the struggle for gay equality, but whether that's true is probably a whole different question.
Furthermore, the quote from Genius claims that the rainbow flag was not in use during the 80s, which isn't true: it was invented in 1978, five years before "Karma Chameleon" came out.