Full Idea
A unique yellow experience may be evoked with monochrome light of 580nm, or a mixture of 540nm and 670nm. ..Our interpretation of colour experience is a highly idiosyncratic artefact of our visual system.
Clarification
'nm' are nanometres. 'Idiosyncratic' means unique and unpredictable.
Gist of Idea
The way in which colour experiences are evoked is physically odd and unpredictable
Source
Alvin I. Goldman (Phil Applications of Cognitive Science [1993], p.117)
Book Reference
Goldman,Alvin I.: 'Philosophical Applications of Cognitive Science' [Westview 1993], p.117
A Reaction
This confirms what I have always thought - that colour (as qualia) is strictly a feature of minds, not of the world.