Bruyneel didn't start the team - he took over management of it last year after Discovery stopped sponsoring a team.

I suspect the slogan "Pink is the new Yellow" is a slam on the Tour de France (yellow jersey, didn't let Astana ride) as compared to the Giro d'Italia (pink jersey, DID let Astana ride and Contador won), and NOT an indication of a change in uniform color. The Astana (Kazakh national team, basically) colors are that teal green and yellow.