I don't have the patience to keep changing the villagers' clothes in that way; every time someone advances from trainee to adept and so on, plus when they change skills you'd need to go back to the sewing hut. It must be an almost full time job! I do change the doctors' clothes to white so that I can spot them easily. In one game I also switched Elders to yellow outfits, but kept forgetting to change the new ones so I gave up. Most of those still living are as they originally appeared as kids.

A couple of times I've changed a female villager's clothes because they looked unattractive - particularly the frumpy brown sack a few have to wear.
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To err is human; to arr is pirate.