Section 33(2)(d) in The Drugs And Cosmetics Act, 1940
(d)prescribe, in respect of biological and organometallic compounds, the units or methods of standardisation;(dd)prescribe under clause (d) of section 17A the colour or colours which a drug may bear or contain for purposes of colouring;(dda)prescribe under clause (d) of section 17E the colour or colours which a cosmetic may bear or contain for the purposes of colouring;