ALTER TABLE parametres_societe
    ADD COLUMN couleur_secondaire VARCHAR(7) NOT NULL DEFAULT '#6C757D'
        AFTER couleur_principale,
    ADD COLUMN penalites_retard TEXT NULL
        AFTER conditions_reglement,
    ADD COLUMN reserve_propriete TEXT NULL
        AFTER penalites_retard,
    ADD COLUMN signature_document VARCHAR(255) NULL
        AFTER pied_de_page;