] ...Would they really have worn white so often for everyday clothes, given how muddy everywhere must have been before paved/tarmaced roads? Obviously if you had an army of servants to do the laundary then maybe it was not such an issue.
...in NA that Miss Tilney always wears white - and that is supposed to inform the reader that her father is wealthy enough to employ this army you speak of.

I noticed in S&S that ET quite often wore darker colours, and wondered whether this was a practical thing because they did not have the servants.
Probably a clever deduction and also a nice way of showing that Eleanor is more sensible than Marianne.