Hello and sorry for my bad english (my native language is french).

I am looking for informations about the chronology of Google-like
results. Who did copy who ? Nowadays, all of the most used search
engines (Google, Yahoo, MSN, Altavista, Alltheweb) have adopted the
same colors for their search results. A big dark blue title with a
black snippet and a green url. "Cached" is either grey light or blue
light and the places of all these informations are approximately the
same for all these search engines.

I am looking for articles or other sources to know which search engine
created that specific style. Why isn't any of these search engines
complaining about all these clones ? Is Google the creator of this
style he popularized ? Are there scientific works on colors who brought
these engines to adopt these colors ?

Thanks a lot for your help !