Major UIX Tip -- It's Black and White
I decided to experiment with stickability -- how long visitors to the site would stick around for content other than that what brought them there in the first place. I took two relatively popular blogs, and had one with a black background and one with a white background.
The white background blog continuously outperformed the black one. After a month, I switched it. The one that was previously black and now white, suddenly became popular again with more hits.
No one needs more black and white evidence than this. I had previously opined that a black background on a mobile device acts like a mirror, and that a white background was better. That was a subjective feeling before. It appears that it is also an empirical observation now.