What? Why? I personally find Material to be hideous because of its color abuse. It makes your UI look like an over-saturated Fischer-Price toy because of all the bright primary colors everywhere, and that's before we get into the lack of shadow and shading that seems to have infected "modern" design.
It's supported, sure, but that doesn't mean it's going to be used by a lot of people. I can't look it up right now, but I recall the official Google apps look rather flat.
Colors are easily changed, and certainly expected to be changed for reach site; that really isn't relevant to the tech being present. And are you railing against flat design in general? This is another personal preference religious war that's been waged back and forth since the advent of digital design. Don't worry, the pendulum will undoubtedly swing back your way again in a few years.
Well, Material is already a bit of a compromise, it's not as radical as Microsoft's Metro (I know they don't call it that anymore). It uses physical metaphores and fake 3D, it's just very subtle at it.
Your comment obviously wasn't serious, but the color choices in most designs these days are pretty arbitrary. A good design should work in b/w for accessibility reasons alone.
