Can the 3 Pokemon that COULD NOT be shiny be Shiny now?

So, it was previously stated that Zekrom, Reshiram, and Victini COULD NOT be Shiny. When being caught from N’s Castle/Dragonspiral Tower, and Liberty Garden.

Now, giveaways for all 3 Pokemon have been released. The Victini with V-Create, Fusion Bolt and Flare, and Searing Shot, the Zekrom with Fusion Bolt, Bolt Strike, Outrage, and Haze, and the Reshiram with Blue Flare, Fusion Flare, Draco Meteor, and Mist. Could these 3 Pokemon now have Shiny counterparts legitimately if you soft reset in front of the delivery person? Or are they programmed not to be Shiny also?

Pleaselog inorregisterto add a comment.

Good question, but no.

Mystery gifted pokemon will always be programmed to have certain moves, abilities, nature, ect. This will also apply for the shiny appearance. Pokemon will never be shiny, no matter what unless they are meant to, like the Spiky-Eared Pichu, and the three beasts. This is because in the game’s coding, there is a Shiny check function which prevents Mystery Gift from being Shiny by regenerating a new PID until the Pokémon isn’t Shiny.

Source:Bulbapedia