Williams has revealed the livery it will carry on its FW31 for the 2009 Formula One season.

As has been the norm with the Grove-based outfit in recent years, the car was initially launched in an interim testing livery of dark blue before its actual racing colours were then revealed at the team's headquarters.

The FW31 will take on a similar appearance to 2008 from a livery point of view, with a blue and white colour-scheme once again featuring on the cars of Nico Rosberg and Kazuki Nakajima. It will however be a slightly lighter shade of blue than that used last season.

RBS, which announced this week that it will end its deal with the team at the end of 2010, features heavily on the car as does Phillips - with branding on both the sidepods and rear wing.