It’s no coincidence that the visible light color spectrum is made up of one (1) ultra-color (pure white) which contains three (3) primary colors (red, green, blue), which when combined create three more colors (magenta, cyan, yellow) for a total of seven (7).
(It should be noted that we perceive color [more on that later], therefore, it’s easy to make up new colors, e.g. “indigo” based on how our brain interprets what we see. Our human eyes only have 3 cone-shaped photoreceptors, and they are red, green and blue… More on that later, as well!)
Right from creation in Genesis 1, God established the seven days of the week, with the seventh day being the Sabbath (a day of rest). Mathematically speaking—like the color spectrum, the seven days of creation speak to God’s perfection through the first cyclic number (an integer that where permutations of its digits result in related numbers). As it relates the first six days of creation and the six colors that result in pure white light:
As you can see, when multiplied each time, the numbers mathematically create a cyclic permutation.
How did we come up with 142857, you might ask? Well, if we take the Sabbath day (the day that God rested) and divide it by the number of total days in a week (1 / 7), we get the best-known cyclic number in the world: 0.142857. Your next question might be, “What is a cyclic number?” A cyclic number is a number that keeps on repeating itself forever; in this case, 1/7 is 0.142857142857142857142857142857142857142857142857... into infinity.
Ultimately, our infinite God accomplished his PERFECT will in everything He created, right into infinity. You can find the number 7 intelligently designed into many things (including the seven wavelengths of the electromagnetic spectrum), and it’s referenced numerous times in the Bible. One such reference is the seven spirits of God, as found in the prophecies about Jesus in the book of Isaiah:
And the  Spirit of the LORD shall rest upon him (Jesus), the  Spirit of wisdom and  understanding, the  Spirit of counsel and  might, the  Spirit of knowledge and the  fear of the LORD. (Isaiah 11:2)
The seven spirits of God come up again in Revelation, just after God finishes addressing the seven golden lampstands representing the seven churches and their seven angels (Revelation 1-3), and prior to God addressing the seven seals, the seven trumpets, the seven plagues, and the seven bowls of God’s wrath (Revelation 5-17):
At once I was in the Spirit, and behold, a throne stood in heaven, with one seated on the throne. And he who sat there had the appearance of jasper and carnelian, and around the throne was a rainbow that had the appearance of an emerald. Around the throne were twenty-four thrones, and seated on the thrones were twenty-four elders, clothed in white garments, with golden crowns on their heads. From the throne came flashes of lightning, and rumblings and peals of thunder, and before the throne were burning seven torches of fire, which are the seven spirits of God, and before the throne there was as it were a sea of glass, like crystal. (Revelation 4:2-6)
There are many studies on the parallels between the seven spirits of God and the seven colors of the visible light spectrum, but I haven’t found any conclusive evidence as to the specific parallel. I’m quite sure that there is a parallel (since color is VERY important to God – just read the books of Exodus and Numbers!), but for the sake of not speculating, I will not go into detail. I believe Brian Chilton does a good job of referencing the biblical symbolism of colors, so that may be a fair place to start. (There are lots of others out there as well.)
Getting back to the specifics of the color spectrum, one other very obvious observation is that the three primary colors (red, green, blue) are responsible for creating the secondary colors. This is in direct parallel to the work of the Father, the Son (Jesus), and the Holy Spirit.
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If you were dying and you had one last chance to talk with the people that matter most to you, what would you say? If everything was on the line, and nothing was left on the table, what wisdom would you impart? My name is Ray Majoran, and this book is my last lecture.