Because angels’ clothes correspond to their intelligence they also correspond to what is true, since all intelligence comes from divine truth. So it amounts to the same thing whether you say that angels are dressed according to their intelligence or according to divine truth. The reason the garments of some angels gleam as though aflame, while the garments of others shine as though alight, is that flame corresponds to what is good, and light to what is true because of that good.a The reason some garments are pure white and soft white and do not shine, while others are of various colors, is that divine good and truth are less dazzling and are also differently accepted among less intelligent people.b Pure white and soft white correspond to what is true,c and colors correspond to different shadings of truth.d The reason angels in the inmost heaven are naked is that they are in innocence, and innocence corresponds to nudity.e
from Heaven and Hell, Section 179
a. Garments in the Word mean truths by reason of correspondence; because truths clothe what is good: A veil means something of intellect, since discernment is the vessel of what is true: White garments of linen mean truths from the Divine: Flame means spiritual good, and the light from it means truth from that good.
b. Angels and spirits are seen wearing clothes that accord with their truths and therefore with their intelligence: Some garments of angels are radiant, and some are not.
c. Pure white and soft white in the Word mean what is true, because they come from light in heaven.
d. Colors in heaven are variegations of the light there: Colors mean various things that are matters of intelligence and wisdom: The precious stones in the Urim and Thummim, depending on their colors, meant all the truths in the heavens that stem from what is good: To the extent that colors are derived from red, they mean what is good; while to the extent that they are derived from white, they mean what is true.
e. All the people in the inmost heaven are innocent, and therefore seem to be naked: Innocence is manifested in heaven as nudity: For innocent and chaste people, nudity is not a matter of shame because there is no occasion for offense.