Well, these pandas are not literally green, but they are certainly eco-conscious. This was an out-of-home stunt done in Hungary for the World Wildlife Fund:
To get Hungarians to donate to the WWF using the smallest amount of paper, ONE leaflet was created and distributed in a shopping center. Two volunteers dressed as pandas stood at the upper and lower end of an escalator. Printed collateral is usually susceptible to people tossing it out as soon as people get their hands on it, so with this stunt Panda1 distributed this flier to someone going up the escalator. Waiting at the top of the escalator was Panda2 who recycled the leaflet for the next person going down the escalator.