Can Regigigas be shiny in Pokemon GO?

Now that the original Regi trio is out of the way, Pokemon GO is releasing Regigigas in 5 star raid battles.

Regigigas joins Pokémon Go in a Colossal Discovery - Polygon

Shiny Regigigas Trading - POGO Trading

Shiny *Regigigas* Pokemon GO (exchange) Pokemon GO

Shiny Regigigas Shiny pokemon, Pokemon dex, Pokemon

Shiny Regigigas Pokemon Trade Go LV20 Registered / 30 Day Trading Pokémon

HOW TO GET FREE SHINY LEGENDARY IN POKEMON GO! Shiny Regi's in Timed Research!

Shiny Regigigas - Pokemon Go

BLINDFOLDED Shiny Regigigas Last Ball Challenge! - Pokemon GO, #shorts, Pokémon GO

SHINY *REGIGIGAS* COUNTER GUIDE! 100 IVs, MOVESET & WEAKNESS -NORMAL RAID BOSS

Shiny Regigigas - Pokemon Go