Reference: Colours
Hastings
The colours named in OT and NT, as in other ancient literatures, are few in number, and of these several are used with considerable latitude.
1. White as the colour of snow in Isa 1:18, of the teeth described as milk-white (Ge 49:12), and of horses (Zec 1:8; 6:3,6); also of wool (Re 1:14)
See Verses Found in Dictionary
He answered,
Then He ordered them all to sit down in rows on the green grass.
and His clothes were shining as white as white could be, yea, whiter than any earthly bleacher could bleach them.
And they dressed Him in a purple robe and made a crown of thorns and crowned Him with it,
And the soldiers made a crown out of thorns and put it on His head, and put a purple coat on Him,
for you are always showing that you are a letter of Christ, produced by my service, written not in ink but by the Spirit of the living God, not on tablets of stone, but on human hearts.
His head and hair were as white as white wool, as white as snow. His eyes were like coals of fire;
When He broke the third seal, I heard the third living creature, say, "Come!" I looked, and a black horse appeared, and its rider was carrying a pair of scales in his hands,