Senior care is actually quite innovative. The Pebble Project (https://www.healthdesign.org/pebble https://www.healthdesign.org/pebble) works on design of healt

Senior care is actually quite innovative. The Pebble Project (https://www.healthdesign.org/pebble https://www.healthdesign.org/pebble) works on design of healthcare facilities to promote patient safety (among other things). I attended a lecture by one of the directors, he talked about things like lining dementia units with dark tile. Dementia patients like to walk and often will wander away. The contrast between dark and light tile creates a sense of water or a hazard, and patients tend not to cross it. So at the entrance and exit of nursing units, at doorways to medication rooms, they lay a row of dark tiles to prevent wandering.