On a Barça's flag and between Catalan flag the message could be read when the players enter to the pitch
Camp Nou is one of the biggest stadiums in the world and with that amount of people the mosaics are so powerful and exciting for the players. Before a big match, the club design different motif that could represent Barça, Catalonia or Barcelona.
This time, against Real Madrid, the message would be 'We color football' on a Barça flag and then will also appear a Catalan flag. First, it would also be read the message on a blue base, but during Barça's hymn, the fans would have to move the reversible cardboard to show the flags.