Wrong.Green marks on products indicate No use of Chemicals(Natural fruit extract/plants or ayurvedic plants),red is for combination of Chemicals & Natural Products(In equal proportion) and black indicates use of only chemicals and no Natural Products.
In edible foods Green Marks indicate Vegetarian Food(No flesh used) and Red Mark indicate Non-Veterinarian Food(Use of meat).
For further read-Consumer Protection Act,1995."A company manufacturing any product as to state use of ingredients with percentage.In case of use of Chemical Products the ingredients has to be mentioned along with a black mark indicating no used of Natural Products.In...
more... case of Edible product the company has to mention the use of Animal Meat by either a Green Mark(No use) and Red Mark(Use of meat).Also a company has to print the full address of manufacturer with pin code and date of packing.In case a company is found not following it,the company's license may be revoked and criminal procedure will be followed by FDI as per Consumer Protection Act of 1965 and 1995 and Manufacturer & Package Act of 1995.
For further information purchase CBSE Econmics textbook of Class 10th(Or you can contact me)