The poet in this hymn supplies Indra to give support to those who drive away the evil and spread the light throughout the World (i.e. to the Aryan.) … - Maria Schetelich

Here, too, light is the antithesis to darkness. Soma, after all, is often called ‘shining golden, white, bright, goldencoloured {sukla- varnay or ‘bringer of light’.

Schetelich, M. (2002). Bild, Abbild, Mythos-die Arier in den Arbeiten deutscher Indologen. " Arier" und" Draviden", 40-56. p. 43

Here, too, light is the antithesis to darkness. Soma, after all, is often called ‘shining golden, white, bright, goldencoloured {sukla- varnay or ‘bringer of light’.

However, if one looks at the passages more closely, the context and sentence or verse construction also allow for a different interpretation, especially since tvac - more on this below - is used much more frequently in the meaning "fur, blanket" than in the meaning "(human) skin".