I think it comes back to this idea that rich people can afford to wear lighter colours as indicates they don't have to labour or do things which require them to get dirty. At this point it is a bit of a pastiche or caricature…

The case for the ‘stimulating’ shirt

Of course!

What Frasier could teach us about dressing today

You definitely can do that, play around with more casual trousers perhaps, like jeans, chinos etc

High/low dressing

With the collar, it will be because its not standing up as strongly as it could, but that could be down to a combination of things, including the cut, button position, structure and placket. Sorry, it's hard to pin down but a bespoke maker could…

The height of knitwear: why necklines matter