A rubro ad nigrum is a Latin term, meaning ‘from the red to the black.’ The phrase denotes from the title of a statute that was formerly printed in red letters, to its body that is often printed in black letters.
The following is an example of a case law using the phrase:
A reading of § 549(b) a rubro ad nigrum elicits the intention of Congress to temper the "gap" period debtor's right to transfer property of the estate for no value or less than its value equivalent. H.R. No. 95-595, 95th Cong., 1st Sess. 375 (1977); S.R. No. 95-989, 95th Cong., 2d Sess. 90 (1978). [In re Brooklyn Overall Co., 57 B.R. 999, 1002 (Bankr. D.N.Y. 1986)].