Project Page

Github Repository

Photo Credits

RED
http://www.flickr.com/photos/karateputter/ / CC BY-NC-SA 2.0
GREEN
http://www.flickr.com/photos/pandiyan/ / CC BY-NC 2.0
ORANGE
http://www.flickr.com/photos/jbe/ / CC BY-NC-SA 2.0
PURPLE
http://www.flickr.com/photos/jimmy_macdonald/ / CC BY 2.0
BLUE
http://www.flickr.com/photos/josefstuefer/ / CC BY 2.0