>>44716741Yes. I read that thread.
It literally says they chose them manually. What he refers to is the fact that a pokemon being shiny is a pallet shift, but the pallet it shifts to was chosen MANUALLY.
Let me explain it to you in detail.
Pokemon uses Pallete #1-1 for the normal coloration.
If a pokemon has the shiny variation, the game will use Palette #1-2 instead, and so on.
Each palette was chosen by the devs, not made by an algorithm. What IS chosen by an algorithm is the palette used by the Pokemon, the COLORs are chosen by the devs.
Since Gen 3 they had individual sprites for shiny and non-shiny, instead of shifting the palette.