Argent

Colour Group: Brun Base, Cream, Noir Base, Pearl, Rouge Base, and Rouille
Rarity: Unnatural
Importable?: Yes

Plomb

Colour Group: Noir Base, Pearl, and Rouille
Rarity: Unnatural
Importable?: Yes

Nickel

Colour Group: Noir Base and Rouille
Rarity: Unnatural
Importable?: Yes

Violet

Colour Group: Crayon, Noir Base, and Pastelle
Rarity: Special
Importable?: Yes - Admin customs only

Classic Double Cream Doré

Colour Group: Champagne, Cream, Doré, and Noir Base
Rarity: Unnatural
Importable?: Yes

Classic Double Cream Paon

Colour Group: Champagne, Cream, Noir Base, and Paon
Rarity: Unnatural
Importable?: Yes

Classic Cream Paon

Colour Group: Champagne, Cream, Noir Base, and Paon
Rarity: Unnatural
Importable?: Yes

Modern Raisin

Colour Group: Bonbon, Modern Bonbon, Modern Peach, Noir Base, and Peach
Rarity: Special
Importable?: Yes - Special tier

Classic Vanille

Colour Group: Bonbon, Brun Base, Classic Bonbon, Classic Peach, Cream, Noir Base, Peach, and Rouge Base
Rarity: Special
Importable?: Yes - Special tier

Classic Myrtilles

Colour Group: Bonbon, Classic Bonbon, Classic Peach, Cream, Noir Base, and Peach
Rarity: Special
Importable?: Yes - Special tier