Tyrian purple Tyrian purple Tyrian purple (, "porphúra"; ), also known as Tyrian red, Phoenician purple, royal purple, imperial purple or imperial dye, is a reddish-purple natural dye. It is a secretion produced by several species of predatory sea snails in the family Muricidae, rock snails originally known by the name "Murex". In ancient times, extracting this dye involved tens of thousands of snails and substantial labor, and as a result, the dye was highly valued. The main chemical is 6,6′-dibromoindigo. Tyrian purple may first have been used by the ancient Phoenicians as early as 1570 BC. The dye was greatly prized
Trooping the Colour year emphasise the Queen's knowledge of the attributes of her guards, and single out "steadiness" as a highly prized quality for a guardsman. The accompanying marches always carry a flavour of the regiment whose colour is being trooped, lending the royal inspection a unique atmosphere. For example, if the Welsh Guards are trooping their colour, the music will include their traditional regimental march, "Men of Harlech". While the Queen passes the six companies of foot guards on her left, a slow march or air is played. Once the phaeton turns around the rear of No. 6 Guard, the music changes