(Pseudo-)Double Cream Fange

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

Argent

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

Or

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

Blaze

Colour Group: Pearl, Regius, and Rouge Base
Rarity: Unnatural
Importable?: Yes - Admin customs only

Amanita

Colour Group: Brun Base, Champagne, Cream, Mushroom, Noir Base, Pearl, and Rouge Base
Rarity: Natural
Importable?: Yes