It took me sometimes to notice that the Windows 8 logo wasn’t something totally new but more or less a dynamic adaptation of the Windows 1 logo. I ‘m not old enough to have played with this first version of Windows. My relationship with the then UI on top of DOS started in the early 90s.
After 20 years of a four-primary-colour logo we are back to a monochrome blue logo. Will the coming Windows 8.1 have an impact on the logo colours too? If so, let’s guess it will be red, green, blue and yellow. Actually, the current Microsoft logo would be a good candidate :