Like everything else, the clothes angels wear correspond, and since they do correspond they truly exist (see above, Section 175). Their clothes reflect their intelligence, so all the people in heaven are dressed according to their intelligence; and since one will surpass another in intelligence (see Sections 43 and 128), one will have better quality clothing than another. The most intelligent wear clothes that gleam as though aflame, some radiant as though alight. The less intelligent wear pure white and soft white clothes that do not shine, and those still less intelligent wear clothes of various colors. The angels of the inmost heaven, though, are naked.
from Heaven and Hell, Section 178
Notes:
Section 175: Published 12/11/2019
Section 43: Published 6/7/2019
Section 128: Published 7/3/2019
Secrets of Heaven 