I never 'got' the Windows 8 logo. Something about the shape put me off. Something about that cyan color draws me back in time, it's just so abrasive to the eyes, and it's almost a match for the non-enterprise HP blue.
The color choices for the UI in Windows 8 were just so odd as a whole. It's as if Microsoft was so criticized for being too 'cartoony' with XP that they just completely went off the wall.