Windows: One of the nice things about Windows is that if you don't like a particular detail, you can change it. CustomizerGod allows you to manage nearly everything -- including icons, branding, the Start button and more -- in one place.
The app includes many categories for features you can customise including the appearance and behaviour of the Start button, the Charms bar and system tray icons. It can also back up your settings so you can revert your changes later. The installer does have some unwanted software selected to install by default, but simply check the appropriate boxes and read each step carefully and you should be good.