The situation when someone is accidentally or intentionally exposing (showing) colors from their clothing that relate to a gang 'color' causing
alarm or
suspicion from anyone that notices, especially
authorities such as the police.
Young individual walking in the mall wearing all blue: hey why the hell are you questioning and searching me as if I'm carrying any weapons?! What is this the
gestapo, I thought this was
a free country, I could wear whatever the hell I want!
Two
undercover cops: well there's been a gang stabbing here earlier and you were 'flashing colors' (wearing all blue).