RhymeZone: colourable definitions

Definitions of colourable:

adjective: (obsolete) Colourful.
adjective: Apparently true; specious; potentially justifiable.
adjective: (now rare, sometimes law) Deceptive; fake, misleading.
adjective: (law) In appearance only; not in reality what it purports to be, hence counterfeit, feigned.
adjective: That can be coloured.

(Definitions from Wiktionary)