It means that it is characterized by combining the colors white and red. It is a way to call the peru selection, for the traditional colors of its uniform and for the colors of the Peruvian flag. It has red and white stripes.
White boy. - Alludes to the colors of the flag of Peru. Blanquiroja in this case is a signifier that determines the identification of Peruvians with the colors of their flag. Its meaning is a message of deep love for his homeland.