Just because the majority is silent, doesn't mean that they all like the new Metro UI. It just means that they didn't share their opinion here.
Personally, I wouldn't post here if I didn't read your post because I saw enough people have already suggested the same thing I would like to suggest:
Please, give us the option to deactivate the custom theme and use the theme of our OS!
I thought it would be just waste of time of those who read this topic, to post the same thing as all the others before me.
You wouldn't want 7 million users to post here 7 million posts, do you?