Blue: Truth (... and that they put upon the fringe of the borders a ribband of blue: And it shall be unto you for a fringe, that ye may look upon it, and remember all the commandments of the LORD, and do them; and that ye seek not after your own heart and your own eyes, after which ye use to go a whoring: That ye may remember, and do all my commandments, and be holy unto your God. Numbers 15:38-40). This is where we get the expression ‘true blue’ from.
Red: Sacrifice. It can represent the blood of Jesus
(These are they which came out of great tribulation, and have washed their robes, and made them white in the blood of the Lamb. Revelation 7:13; 14:20)
Purple: Royalty (Then came Jesus forth, wearing the crown of thorns, and the purple robe. And Pilate saith unto them, Behold the man! John 19:5)
Gold: Character (I will make a man more precious than fine gold; even a man than the golden wedge of Ophir....For God maketh my heart soft... Isaiah 13:12; Job 23:16)
Black: Sin, darkness, error, power of Satan (This then is the message which we have heard of him, and declare unto you, that God is light, and in him is no darkness at all. If we say that we have fellowship with him, and walk in darkness, we lie, and do not the truth: I John 1:5-6)
