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
But Jesus answered: [ "In the evening you say 'It will be fine weather, for the sky is as red as fire.'
Jesus directed them to make all the people take their seats on the green grass, in parties;
And his clothes became of a more dazzling white than any bleacher in the world could make them.
They dressed him in a purple robe, and, having twisted a crown of thorns, put it on him,
The soldiers made a crown with some thorns and put it on his head and threw a purple robe round him.
All can see that you are a letter from Christ delivered by us, a letter written, not with ink, but with the Spirit of the Living God, not on 'tablets of stone,' but on 'tablets of human hearts.'
'The hair of his head was as white as wool, as white as snow; his eyes were like flaming fire;
When the Lamb broke the third seal, I heard the third Creature crying--'Come.' And in my vision I saw 'a black horse.' Its rider held scales in his hand.