Ouch!

When someone first described the idea of theming, as in something like CSS and HTML, I totally got it. Can't apps use a descriptive semantic language underneath and just have the OS skin most of it for you?

Swapping themes and making applications and the OS more accessible thereafter would surely be much easier. I know I'm simplifying things somewhat, but isn't this the next evolution in responsive design?

I'd find it someone hard to think that apple would eschew accessibility Perhaps high contrast mode will exist at the very least! Even Windows 8 has made a few inroads.