Really? Why is it then that we have such popularity in color schemes like Solarized[1]? Or the much older zenburn? I'll agree that there are a lot of bad color schemes out there, but that's because anyone can create a color scheme. There's no certification process to create one.
Back in the era where people "themed" their window manager (GNOME, Kwin, Windows, and even OSX had hacks for this), look at all of the really gaudy window themes that were created. Is this an argument against all theming of windows?
Is judicious use of Comic Sans an argument against fonts? Of course not.
Best color scheme I have found, I use it for everything. I can't even imagine opening up some of my code in notepad or vi(m) with no syntax highlighting and actually trying to do a productive amount of work. This suggestion seems absolutely ridiculous if your syntax highlighting is sane.