one whose form reveals his lordship over everyone as said in -rūpamĕva asya ĕthanmahimānam vyāchashtĕ- —

going from place to place [one divine abode to another] until ī see his divine form which is like a dark cloud —

 sarvĕṣvaran who has a divine form —

 ṣhe is saying that (emperumān’s) divine body is having colour like that of dark cloud; —

having a divine form which is dark, and befitting him —

worshipping his blackish form, as the reason —

she showed (his) divine form which is like monsoon cloud, as a simile. —

radiance of his divine form (which he previously gave) —

divine (spiritual) body/form-s —

his divine form —

(ŏh thirumāl!) your divine form —

the beautiful divine form —

divine form —

with his divine form —

having a divine form —

having beautiful form —

having divine form —

your perfectly enjoyable divine form —

 having divine form —

 divine form —