bounty
A ararat Registered User Messages 6,582 Dec 20, 2015 #4,312 yellow (the opposite of blue - colour models by Helmholtz / Hering) (the opposite of violet - colour model by Goethe)
yellow (the opposite of blue - colour models by Helmholtz / Hering) (the opposite of violet - colour model by Goethe)
A ararat Registered User Messages 6,582 Jan 21, 2016 #4,315 normal (the opposite of abnormal, deranged, etc.)