ai weiwei american pop artist andy warhol art art products artist artist ai weiwei artist eugène henri artist roy lichtenstein artist sir sidney artists jeff koons brief third drawer british artist bob collaboration san francisco collection complete visual identity dallas museum drawer down studio exhibition exhibition ai weiwei fine arts french post-impressionist artist functional art merchandise functional art products highly successful exhibition. iconic ned kelly jackson pollock jeff koons modern art moma design store national gallery ned kelly new product strategy paul gauguin pop art product details quintessential slogan design range robert nolan om roberta smith roy lichtenstein royal academy san francisco museum sfmoma transformation sidney nolan sidney robert nolan significant australian works. sir sidney robert tote bag visual identity overhaul