What color is Photograph, Photograph of 3, square Jasmin (under construction); View of Rear Façade after Masonry Jointing (“Vue de la Façade Posterieure de la 1re Construction Standard après le jointoiement des Pierres Agglomereès”), from album “System and Elements whose Ownership is Restricted to Standard-Construction, Franchise-Holder of Guimard’s 10 Patents” (“Système et Éléments dont la Propriété est Réservée au Standard-Construction Concessionnaire des 10 Brevets Guimard”) ?