Theory: Pokemon Sun and Rainbow?!

We are going back to 2016. Sun and Moon were just released. You decided to pick Sun. After playing a while in the game you came with the thought that Pokémon Moon is really weird in this situation. It goes about light, isn’t it? Isn’t Ultra Necrozma also related to “The Blinding One”? Well, it all goes about light. But there is no such thing as moonlight. The moon only reflects the light of the sun. So, then Necrozma would not be the Prisma Pokémon. Then it would be logic to make Necrozma related to celestial bodies. But they wanted to relate it to light. Well ok. So, my theory is, why not put Ho-Oh and Solgaleo together? Isn’t Ho-Oh called “The Rainbow Pokémon”? Why are his games called GOLD?! Also, think of the logic. What will you get if you let sunlight (Solgaleo) shine through a prisma (Necrozma)? A rainbow (Ho-Oh)!