The English non-profit Oxfam is asking everyone to "demand action until you're blue in the face." You'll be joining Fatboy Slim, Jarvis, Little Boots and VV Brown to send a message to world leaders at the climate summit in Copenhagen asking them to deal with climate change as a real problem.
As part of the initiative, campaigners will take a snapshot of you at various festivals across the UK and your photo will be added to a massive petition that will sent to the PM. As the numbers grow, they'll continue to update the gallery of blue faces. This movie will also be shown on festival screens across the country. Go blue for green!