The headline of this post is more dramatic than the reality. Google is not actually making judgements about the design of your website. As Matt Cutts has said several times in his videos, Google doesn’t really care what colour your site is, what shape it is, how many H1 tags you have or the amount of text you use. All it cares about is promoting websites people want to read.
As I have said to many people on many occasions, there is an absolute logic to giving Google what it wants. Create a website that people can use, that people like to visit repeatedly, that people like to promote, that is textually relevant to the kinds of things your target readers search for in Google.