Red:
Warfare, blood covering, Exodus 26:14, blood of Jesus, celebration because of our cleansing and our new covenant with God.
Orange:
Praise, fire of God
Yellow: (amber) Glory of God, presence of God, Ezekiel 1:4, Ezekiel 8:2 represents joy
Green:
healing, new beginnings, life, restoration . Revelation 22:2, Psalms 23: 2-3
Blue:
Grace, heavens, Holy Spirit, remembrance of God's commands, (Numbers 15: 39-39 here blue represented revelation in the priestly garments.)
Brass:
tested, suffering, one who withstood the fury of God's wrath, righteousness
Light Blue:
Grace, mercy, river of life/ prophecy.
Purple:
Royalty, kingship, honour, Luke 16:19, Judges 8:26
Lavender:
Anna Roundtree author of The Priestly Bride, observed Angles of His Presence that served at the altar. They waited in His Presence ministering to Him.
Gold:
Royalty, kingship, glory, Esther 1:7
Red:
Redemption, strength, faith, Genesis 20:16, Psalms 12:6, Psalms 66:10
White:
Purity, innocence, light, Revelation 7:9
Black:
Righteous judgement Lamentations 4: 6-8, Revelation 6:5
Pink:
Right relationship, compassion, joy
Brown:
Servant hood, common, labour or bondage.

The following reference speaks of the
White stone(s):
Rev 2:17 If you have ears, listen to what the Spirit says to the churches. To everyone who wins the victory, I will give some of the hidden food. I will also give each one a white stone with a new name written on it. No one will know that name except the one who is given the stone.
This white stone is absolution from the guilt of sin, alluding to the ancient custom of giving a white stone to those acquitted on trial and a black stone to those condemned. The new name is the name of adoption: adopted persons took the name of the family into which they were adopted.Note: I found this information on the white stone from Matthew Henry's Commentary Book)