The seven vases in the True Colour collection are made from blue, black, and pink brass; aluminium; copper; brown; and black steel. Each vase shows one of these seven metals in both its oxidised and polished state, revealing the color and textural possibilities of each type of metal. Designer Lex Pott has conducted extensive research into the oxidisation process. "Every metal has its own oxide colour depending on the reaction," he said. "It took a lot of research to find the right recipes to accelerate the oxidisation, which might otherwise take decades." Each vase was oxidised in its entirety and then the bottom or the top section was cleaned and polished to create a different colour and texture." By showing both the original and oxidised colour in one product, the viewer is made aware of its material qualities," said Pott. The organic process of oxidisation allows for each vase to be different, while maintaining a replicable concept.