Thing with the color recipe is that at most peoples level they don't have enough funds to combat the infringement of a color recipe, so I wouldn't worry about it for the color recipe.
http://www.uspto.gov/faq/trademarks.jsp
Must I register my trademark?No. You can establish rights in a mark based on use of the mark in commerce, without a registration. However, owning a federal trademark registration on the Principal Register provides several important benefits.
Back to top What are the benefits of federal trademark registration?Owning a federal trademark registration on the Principal Register provides several advantages, including:
Public notice of your claim of ownership of the mark;
A legal presumption of your ownership of the mark and your exclusive right to use the mark nationwide on or in connection with the goods/services listed in the registration;
The ability to bring an action concerning the mark in federal court;
The use of the U.S. registration as a basis to obtain registration in foreign countries;
The ability to record the U.S. registration with the U.S. Customs and Border Protection (CBP) Service to prevent importation of infringing foreign goods;
The right to use the federal registration symbol ®; and
Listing in the United States Patent and Trademark Office’s online databases.