Why have colors?
The colors are simply a way of trying to describe the often complex, sometimes confusing and sometimes even contradictory terms and arrangements that are found in this field. Terminology, business practice and attitudes are rarely consistent between publishers, and can vary between journals produced by the same publisher.
The original color code was established by the JISC-funded RoMEO project in 2003 and has been continued by the RoMEO service (www.sherpa.ac.uk/romeo) as a way of presenting a standardized approach to the different rights, permissions, and restrictions that are imposed by different publishers. Precise and specific details of each publisher's permissions can be found within the publishing contracts which each author signs. What the RoMEO colors are for is to summarize these conditions and give a general picture of the rights that are retained by authors.
Therefore, in summary:
|Green||can archive pre-print and post-print|
|Blue||can archive post-print (ie final draft post-refereeing)|
|Yellow||can archive pre-print (ie pre-refereeing)|
|White||archiving not formally supported|