Ok so for this piece in particular there is a science based subtlety to expand on Sayori’s and Sephiroth’s theoretically complementary nature
You’d think that the blue stars would be cooler than the yellow stars since the color blue is used for cold temperatures and yellow was used for hot temperatures, right?
Apparently not; the blue stars are somehow hotter than the yellow stars because of the way light waves travel, since blue light has a higher frequency than yellow light
TL,DR; I am just continuing on conveying Sayori’s warmth and Sephiroth’s coldness via scientific research