Every modern Tree of Life diagram comes coloured, and the colours are treated as fixed. Chesed is blue, Gevurah is red. Nobody asks why, because the chart came that way and charts do not explain themselves.
There was an earlier system, and it was different — with reasons attached to every assignment, worked out by one of the most careful minds the tradition produced. Green for Understanding. White and black together at the top. A middle sphere the colour of an egg yolk. So the question is worth asking about any diagram you have been handed. Why is that sphere painted that colour?
The principle comes first, and it rules out decoration. Colours are ascribed to the qualities according to their actions, which means every assignment is supposed to be derivable from what a sphere does.1
Five colours are in play: blue, red, green, white and black. Two of those are not really colours at all, and the point is conceded — though they were considered colours by the authors of these attributes, which is the only thing that matters for reading the system.1 Red, green and white are by far the most important.
And the original list runs:
Six of the ten are white, which is the first thing a modern reader will find strange. The reason for it emerges later, and it is a good one.
Keter gets two colours because it cannot have one. One cannot attribute any colour to Nothingness, so no colour can be ascribed to Keter. It is a sphere balanced between pure being and becoming, still hidden within the Eternal No-Thing.2
The solution is to name the extremes rather than a shade. Keter is represented by white and black, and each half is assigned. White represents Mercy, and so it shows the Mercy of Keter. Black indicates the true essence of Divinity, hidden beyond time, space and events.2
Then the sentence the whole system rests on, from Pardes Rimmonim:
"That essence does not change colour at all, neither judgment nor compassion, neither right nor left. Yet by emanating through the [Sefirot] — the variegated stained glass — judgment or compassion prevails."2
The light is one thing and it never varies. The glass is what produces judgment or compassion. So every colour on the Tree is a fact about the window, and not about what is shining through it.
Chochmah is called the beginning of action, and blue is assigned to it for a reason that is almost optical. Blue is the beginning of the development of colour from blackness — the first radiations of light from Ein Sof.3
Which makes the sequence at the top of the Tree a description of dawn. Black is the essence with nothing showing. Blue is the first thing to appear out of it, and it appears because something has started to move.
Binah then gets green, and the derivation is mixing rather than symbolism. Green is attributed to it since that colour contains the colours of red and white, which are perceived together — and it also contains the colour blue, which is from Chochmah.3
So the assignment says something structural. Binah unites Mercy and Severity — white and red — and channels Wisdom, which is the blue. The colour is a formula for what the sphere is doing.
White is given to Chesed, and it is explicitly not the same white as Keter's. It is as if the Light of Mercy, having been received via Chochmah and Binah, had become a bit contaminated — somewhat grey, with a good dose of blue in it.3
That is an unusually honest move for a system of correspondences. The same colour name is being used for two different things. And the difference gets attributed to what the light had to pass through on its way down.
Gevurah is red, the colour of judgment, and it collects two more. Blue is found there too, since the Light of Gevurah also emanated via Chochmah and Binah. And it is also black, because it contains that aspect of retribution which blackens the faces of creatures.3
Then one line about the relationship between Gevurah and Binah, quoted and left unexplained. Cordovero refers to the joy some wine which proceeds from Gevurah to Binah.3 Severity sending joy upward to Understanding is not the traffic anybody would predict, and no explanation follows it.
Tiferet is traditionally white, and Cordovero saw it as basically green, along with several other principles at work in it:
"They ascribed to it sapphire in extension of Da'at. In its revealed aspect of determination, it includes white and red, that is, the green of an egg yolk, in truth. Tiferet includes the colour[s] of Chesed and Gevurah in one of two [manners]. It is either above them in the mystery of Da'at, which includes them in their roots or in its lower aspect, that is, the mixture of red and white. It also possess the colour of purple, which includes five colours. They are the mystery [of the angels] Uriel, Refael, Gavriel, Michael, and Nuriel."4
The green of an egg yolk is the phrase worth keeping. It is a real colour anybody can picture, arrived at by mixing the two things Tiferet stands between. And it is a very long way from the abstract balance the sphere usually gets described with.
And the purple carries a second system inside it. Purple includes five colours, and those five are the mystery of five named angels.4 So one sphere is holding a colour that is itself a list. Nothing anywhere says what the five colours in purple are.
The two spheres below get their colours by direction of lean rather than by mixture. Netzach is red shading to white, for it is mostly mercy because of its orientation to the side of Chesed. Hod is white shading to red, because it is mostly Judgment due to its orientation to the side of Gevurah.5
Which explains the six whites in the original list. Yesod was originally white, as were all the spheres of the Middle Pillar — the Pillar of Being, in contradistinction to the outer Pillars of Doing.5 White was simply the colour of the column that does not act.
Cordovero changed it. He made Yesod a mixture of white shading to red and red shading to white, focusing the qualities of Netzach and Hod within itself. It is also a kind of sapphire blue, since the Light of Yesod is refracted via all the preceding spheres.5
And Malchut, originally white, was seen as comprising all colours, since all the Light derived from every sphere is focussed there. The image given for it is a rainbow.5
You have a coloured diagram and you want to know whether the colours mean anything. There is a stated rule for checking.
Start by asking what action the colour is supposed to record, since that is the stated rule. Colours are ascribed according to their actions. A correspondence you cannot derive from what the thing does is decoration, and this one is unusual in being derivable almost throughout.
Then use the stained-glass line as a general instrument, because it is the most portable thing here. When something reads as judgment or as mercy, the question is not what it is. It is what it came through. The light is unchanged, and the character was added by the medium.
Then watch for the same word meaning two things. Keter's white and Chesed's white have the same name and are explicitly different, because one has passed through two spheres and picked something up. Any system with repeated labels is worth checking for that, and most systems do not admit it.
And keep the derivations that mix, because they are checkable. Green holds red and white seen together. Purple holds five. Yesod is white-toward-red and red-toward-white at once. Those are claims about colour you can hold up against actual colour, which is more than most correspondence tables offer.
This is a real system by a named author with a cited work, which puts it well above most of the material around it. Moses Cordovero is a major figure, Pardes Rimmonim is a major book, and the introduction to Kabbalah referred to here is a genuine text.
The derivations are also unusually testable for this genre. Green really does sit where red and white meet in perception, and blue really is the first colour to separate from darkness at low light. Whether those facts license the theological conclusions is another matter, and the colour facts themselves are not invented.
Tension left open. Green is Binah's colour because it holds red and white together, and green is also Hod's, and Tiferet is basically green too. Three spheres in three different positions share a colour derived from a single mixing rule, and nothing here says what distinguishes them.
🚩 PRACTITIONER SOURCE. 🚩 The Cordovero quotations are given at second hand with numbered notes but no page references. 🚩 The lists in the original are laid out as tables that the scan has partly scrambled. 🚩 The joy some wine which proceeds from Gevurah to Binah is quoted with an evident transcription problem and left unexplained.
The system arrives here as the original and better one, and it quietly undercuts the framework it belongs to. If the essence does not change colour at all, then none of the ten colours describes anything about the divine. They describe the glass.
Which makes the Tree a diagram of the equipment rather than of the content — a record of what light picks up on its way here, and not a map of what is up there. Every sphere is a filter, and the differences between them are differences in filtering.
That reading is consistent and it costs the tradition something. Elsewhere the spheres are qualities God has, forces with characters, things a practitioner ascends through and takes on. Here they are panes of glass. Nothing in this section reconciles the two, and the stained-glass line is too good to be an accident.
Cognitive Priming: Colouring a Memory Without Touching Its Contents — behavioral-mechanics.
Somebody opens a difficult conversation with I'm so glad we can talk about this, drops in a few definitelys and a you're so smart, and by the end you remember the exchange as warm and collaborative. Stripped of that framing, the content covered was tense and unwelcome. The technique does not edit what happened. It changes the emotional colour the memory is stored and retrieved in, by planting cues beforehand that attach themselves to the event afterwards.
That is the stained glass, built and installed by a person. The essence does not change colour at all — the conversation was what it was — and by passing through something placed in front of it, judgment or compassion prevails.
Which turns Cordovero's line into a usable instrument rather than a piece of cosmology. When something strikes you as harsh or as kind, the useful question is not what is it, but what did it come through.
And the difference between the two accounts is where the real warning sits. Cordovero's panes are fixed, named and knowable — ten of them, in a published order, and a practitioner can learn which one a given light passed through. The panes a person installs are none of those things. They go up minutes before the event, they are invisible while working, and nobody hands you the diagram. So the practical extension of the doctrine is a question with a timestamp in it: was this pane always there, or did somebody put it in front of me this week?
Sharpest implication. Six of the ten spheres are white in the original list, and white is the colour of the Middle Pillar — the Pillar of Being, as against the outer Pillars of Doing. So in the earliest scheme the majority of the Tree is uncoloured, and colour arrives only where something is being done.
Generative questions.