Colourless is a synonym of unanimated.
As adjectives the difference between colourless and unanimated
is that colourless is having little or no colour while unanimated is inanimate.
colourless
Alternative forms
* colorless (American spelling)
Adjective
(
en adjective)
Having little or no colour.
(of a liquid) Water white.
Lacking in interest or variety.
unanimated
English
Adjective
(-)
Inanimate.
Not animated; lacking vivacity.