Smarties are colour-varied sugar-coated chocolate confectionery. They have been manufactured since 1937, originally by H.I. Rowntree & Company in the UK, and are currently produced by Nestlé. Smarties are oblate spheroids with a minor axis of about 5 mm (0.2 in) and a major axis of about 12 mm (0.5 in). They come in eight colours: red, orange, yellow, green, blue, mauve, pink and brown, although the blue variety was temporarily replaced by a white variety in some countries, while an alternative natural colouring dye of the blue colour was being researched.