What is "substantive color"

Substantive \Sub"stan*tive\, a. [L. substantivus: cf. F. substantif.]

1. Betokening or expressing existence; as, the substantive verb, that is, the verb to be.

2. Depending on itself; independent.

   He considered how sufficient and substantive this land was to maintain itself without any aid of the foreigner.
   --Bacon.

3. Enduring; solid; firm; substantial.

   Strength and magnitude are qualities which impress the imagination in a powerful and substantive manner.
   --Hazlitt.

4. Pertaining to, or constituting, the essential part or principles; as, the law substantive.

   Noun substantive (Gram.), a noun which designates an object, material or immaterial; a substantive.

   Substantive color, one which communicates its color without the aid of a mordant or base; -- opposed to adjective color.