by the team until 2006. At that time, Cardiff Blues changed their playing strip in a decision widely interpreted as a move away from the old Cardiff RFC identity, as for the first time black was not included alongside the blue. A variety of alternative colour designs have been used as change strips and for jerseys used in European rugby. A blue and gold jersey modelled on one worn by Aberdare RFC and created to raise money for the seriously injured Aberdare born Cardiff player Owen Williams proved popular and was worn in the 2018 European Challenge Cup final win in Bilbao. Cardiff Rugby have now returned to their traditional colours of Cambridge blue and black, as of 2021. Sponsorship The following companies have produced kits for the Cardiff Blues or sponsored the side at some point in their history since 2003. Home ground Cardiff Arms Park has been owned by Cardiff Athletic Club since the 1920s and has long been considered Cardiff Rugby's spiritual home. From the late 19th century onward, the Arms Park hosted both a cricket ground and a rugby ground until the southern side of the site was sold to the WRU in 1968. The northern side of the Arms Park then became Cardiff Rugby Club's home stadium, while the southern side was to become first the National Stadium and later the Principality Stadium. Cardiff have moved high-profile fixtures "next door" on a number of occasions, such as the 2008–09 Heineken Cup semi-final versus Leicester Tigers. The Arms Park currently consists of two main stands, both with seated and terraced sections. At the east and west ends of the stadium are blocks of hospitality facilities and office space. The Cardiff Athletic Clubhouse sits next to the South Stand. For three seasons from the beginning of the 2009–10 season the first team moved to the new Cardiff City Stadium at Leckwith. Financial pressures and supporter dissatisfaction led to several home games being moved back to the Arms Park in the 2011–12 season. On 8 May 2012 it was announced that the 20-year lease with Cardiff City F.C. had been broken by mutual consent following significant financial losses incurred as a result of the move. The club returned to the Arms Park from the 2012/13 season. For the conclusion of the abbreviated 2019/20 season, and the start of the 2020/21 season, due to the COVID-19 pandemic and the