It can be more than that. Think safety. When I drive in Quebec the road signs are a slightly different hue than used in Ontario. I had a hard time figuring out

It can be more than that. Think safety. When I drive in Quebec the road signs are a slightly different hue than used in Ontario. I had a hard time figuring out which signs were informational - construction after 19h, and the "lane ends 200m" need different reactions. As far as clothes, I have a "garanimals" system with numbers to match up shirts and pants and optionally ties. Hopefully my wife is merciful and matching my clothes tastefully.