OK, but why purple?

According to the RFU's press office: "The inspiration for the colour and design came from the original purple tracksuit England players used to wear and in line with the value we place upon our heritage." The kit was designed by Canterbury, England's new kit suppliers, but it is understood that Stuart Lancaster approved the strip and enjoyed the nod to heritage. It was also given the thumbs-up by England captain (and Arsenal fan) Chris Robshaw, who said: "'The colour schemes are quite similar [to the Arsenal redcurrant strip of 2005/6} and being an Arsenal fan I don't really mind that. It's brilliant!"