Everybody knows the squares of color juxtaposition left behind by artist and teacher Josef Albers (1888-1976) – but he died such a surprisingly long time ago now (a tendency imitated by many one-time masters of modernism) that his characteristic template has become a sort of trademark. Blandness threatens it. All the same, few artifacts in this man-made world maintain such mint-condition freshness after an entire century of being stared at and explicated.