Simon Farmer’s purple guitar said to be the last used by Prince. See SWNS story SWGUITAR: The striking purple guitar said to be the last one ever used by Prince had very modest beginnings – in a workshop in Sussex. Independent guitar maker, Simon Farmer, has built guitars since he was 14, and made his first designs of Princes purple guitar back in 1994. Little did he know that his guitar would end up being shown off by Prince at one of his final appearances – and potentially be the final one ever bought by the star. Simon, who made the entire guitar himself from designs to finished product, said the star’s untimely death was “hugely shocking”.