Long confined to a technical function, the domain name has become a space of expression — and colour, a language of its own. Since the 2012 round, the DNS hosts .RED, .BLUE, .GREEN, .BLACK, .WHITE, .ORANGE, .PINK, .PURPLE and .BROWN, soon perhaps joined by others in the round open from 30 April to 12 August 2026, while Unstoppable Domains’ .YELLOW illustrates the blockchain route. Brands whose identity is built on colour — Orange, Red Bull, BlackRock, Blue Origin — rarely make these extensions their primary address: usage remains peripheral (campaigns, launches, events), partly for linguistic reasons, English placing the colour before the noun (“bull.red” reads awkwardly) and French colour TLDs (.BLEU, .ROUGE) not existing. The article’s warning is defensive: uncontrolled, .GREEN invites greenwashing, .BLUE phishing, .BLACK dilution of prestige — colour TLDs belong in brand-protection strategies.