What seems sad to me is it's not nearly easy nor popular to make and use themes which would style modern OSes to look exactly (or very close to) the OSes of the

What seems sad to me is it's not nearly easy nor popular to make and use themes which would style modern OSes to look exactly (or very close to) the OSes of the past. Once Windows XP arrived with its "visual styles" theming technology I thought the world will never be the same - everyone will be able to have their windows and controls looking whatever they like, just a matter of a mouse click (and a couple of bucks perhaps). In the reality, though, high quality themes (for any OS) seem weirdly scarce and making your own seems prohibitively hard.