This album was teased very early on before YungJZAisDead even announced in his twitter that he was publishing an album called pink&blue.
Some of YungJZAisDead’s old songs (For example “Landslide” by YungJZA) contain a description on the soundcloud page, it reads"ハンナダイヤモンドは私のガールフレンドです “ (this text is in Japanese) and translates to "Hannah Diamond is my girlfriend”. Hannah Diamond is a British singer based in London and on the 20th December of 2013 she released a song named “Pink and Blue” which essentially represents gender roles. Moreover, on the 15th December of 2017 YungJZAisDead released a new song called “heart’s gone” which officially announced the release of pink&blue in its description.