Corporate colors of sites and companies

From time to time I get the feeling that large sites are blended to blue shades in design and logos. I decided that holidays are a good excuse to kill a little time and find out whether it is reality or just a “facebook effect”.

In order not to get up twice, I also checked whether there is a correlation with regular, offline companies.

Next to the color is an example of the site (by clicking a little more):

As it was considered

It is based on the assumption that the main color of the site favicon is the corporate color of the site / company.
A simple way ( hostname / favicon.ico ) sparsil favicons.
Posterized them on this palette:

There is nothing natural in it, the colors are chosen so that the algorithm gives the most human results. Corporate color should occupy> 50% of non-white pixels of the image.
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Conclusion

What is it for? Any, even the most useless, statistics should be output :-)
Possible explanations:

• Blue is considered the calmest. Red is too aggressive, black is gloomy, green is not serious ...
• Blue generally dominates the human visual range.
• This is an absolute coincidence, even slightly increasing the entropy of the universe. And when landing, the UFO illuminates the ground with blue spotlights.

PS That it was not so boring, full combine faviconok top sites.
PPS Post does not carry any useful information, it is useless to search for it. Written from sports interest and love of statistics.

UPD. The comments found a more fundamental research on the topic (considered popular brands).
UPD2. Almost identical to the idea analysis with stunning illustrations (about him, it turns out, was even a topic on Habré).