I don't like the new start menu look. All the bright colors meant contrast. Contrast means all the icons are easier to identify without reading or trying to figure out which of the near-identical (other than color) MS Office icons is Word. On top of removing the tile color, Microsoft made the icons for most of their products to be the exact same shade of "internet explorer" blue.
Hopefully Windows will come with a toggle for colorblind mode... or I guess technically whatever you call the exact opposite of a colorblind mode. I mean, I know it won't have a user-friendly option because these are the poeple who though Windows 8 had a functional interface..They even thought people who use Excel for work want to be forced to wait on watching every single cell individually animate like a slot machine whenever you fill it in... but they still should someday look into giving users back the ability to personalize functionality back into their products without hacky 3rd party tools.
Form over function is the definition of a bad GUI.