I am not able to comment on the colour of the uncreated and transfiguring light which suffuses some of those who have true personhood in Christ, but it may indeed be as you describe. You may know this passage from St Seraphim of Sarov's conversation with Motovilov, which describes this light. And this whole piece is worth reading here.
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Quote:"And in fact the Lord has frequently demonstrated before many witnesses how the grace of the Holy Spirit acts on people whom He has sanctified and illumined by His great inspiration . Remember Moses after his talk with God on Mount Sinai. He so shone with an extraordinary light that people were unable to look at him. He was even forced to wear a veil when he appeared in public. Remember the Transfiguration of the Lord on Mount Tabor. A great light encircled Him, and His raiment became shining, exceedingly white like snow (Mk. 9:3), and His disciples fell on their faces from fear. But when Moses and Elias appeared to Him in that light, a cloud overshadowed them in order to hide the radiance of the light of the divine grace which blinded the eyes of the disciples. Thus the grace of the All-Holy Spirit of God appears in an ineffable light to all to whom God reveals its action."
"But how," I asked Father Seraphim, "can I know that I am in the grace of the Holy Spirit?"
"It is very simple, your Godliness," he replied. "That is why the Lord says: 'All things are simple to those who find knowledge' (Prov. 8:9, Septuagint). The trouble is that we do not seek this divine knowledge which does not puff up, for it is not of this world. This knowledge which is full of love for God and for our neighbour builds up every man for his salvation. Of this knowledge the Lord said that God wills all men to be saved, and to come to the knowledge of the truth (I Tim. 2:4). And of the lack of this knowledge He said to His Apostles: Are you also yet without understanding (Mat. 15:16)? Concerning this understanding , it is said in the Gospel of the Apostles: Then opened He their understanding (Lk. 24:45), and the Apostles always perceived whether the Spirit of God was dwelling in them or not; and being filled with understanding, they saw the presence of the Holy Spirit with them and declared positively that their work was holy and entirely pleasing to the Lord God. That explains why in their Epistles they wrote: It seemed good to the Holy Spirit and to us (Acts 15:28). Only on these grounds did they offer their Epistles as immutable truth for the benefit of all the faithful. Thus the holy Apostles were consciously aware of the presence in themselves of the Spirit of God. And so you see, your Godliness, how simple it is!"
"Nevertheless," I replied, "I do not understand how I can be certain that I am in the Spirit of God. How can I discern for myself His true manifestation in me?"
Father Seraphim replied: "I have already told you, your Godliness, that it is very simple and I have related in detail how people come to be in the Spirit of God and how we can recognize His presence in us. So what do you want, my son?"
"I want to understand it well," I said.
Then Father Seraphim took me very firmly by the shoulders and said: "We are both in the Spirit of God now, my son. Why don't you look at me?"
I replied: "I cannot look, Father, because your eyes are flashing like lightning. Your face has become brighter than the sun, and my eyes ache with pain."
Father Seraphim said: "Don't be alarmed, your Godliness! Now you yourself have become as bright as I am. You are now in the fullness of the Spirit of God yourself; otherwise you would not be able to see me as I am."
Then, bending his head towards me, he whispered softly in my ear: "Thank the Lord God for His unutterable mercy to us! You saw that I did not even cross myself; and only in my heart I prayed mentally to the Lord God and said within myself: 'Lord, grant him to see clearly with his bodily eyes that descent of Thy Spirit which Thou grantest to Thy servants when Thou art pleased to appear in the light of Thy magnificent glory.' And you see, my son, the Lord instantly fulfilled the humble prayer of poor Seraphim. How then shall we not thank Him for this unspeakable gift to us both? Even to the greatest hermits, my son, the Lord God does not always show His mercy in this way. This grace of God, like a loving mother, has been pleased to comfort your contrite heart at the intercession of the Mother of God herself. But why, my son, do you not look me in the eyes? Just look, and don't be afraid! The Lord is with us!"
After these words I glanced at his face and there came over me an even greater reverent awe. Imagine in the center of the sun, in the dazzling light of its midday rays, the face of a man talking to you. You see the movement of his lips and the changing expression of his eyes, you hear his voice, you feel someone holding your shoulders; yet you do not see his hands, you do not even see yourself or his figure, but only a blinding light spreading far around for several yards and illumining with its glaring sheen both the snow-blanket which covered the forest glade and the snow-flakes which besprinkled me and the great Elder. You can imagine the state I was in!
"How do you feel now?" Father Seraphim asked me.
"Extraordinarily well," I said.
"But in what way? How exactly do you feel well?"
I answered: "I feel such calmness and peace in my soul that no words can express it."