The story
Founded by Maurice Bardèche in 1948.1
The name of the company is reference to the work by Robert Brasillach, Les Sept couleurs, which was the first to be published by this SARL.
One of the principal objectives of this publishing house was to give a voice to those authors banned by the CNE, and other nationalists who in turn, led to the foundation of Rivarol and the journal Défense de l'Occident.
From Wikipedia’s article on Les Sept Couleurs, shared under CC BY-SA 4.0.3