Are Reshiram and Zekrom shiny in Pokemon Go?

As part of the Season of Heritage, Reshiram, Zekrom and Kyrurem return as Tier 5 Raid Bosses in Pokémon Go. Now that the Season of Mischief is over, we
Are the current Raid Bosses shiny in Pokemon Go? The Tao Trio are back, starting with Reshiram and Zekrom, but can you catch their shiny form?

Pokemon GO: The Legendary Shiny Reshiram & Zekrom Have Arrived

Pokemon Go SHINY RESHIRAM ZEKROM RAID CATCHES CATCH India

Can Zekrom Be Shiny in 'Pokémon GO'?

Shiny Reshiram, Zekrom, Kyurem Come to Pokémon GO in Huge Update

pokemongo] shiny zekrom and reshiram both on first try??? guess

How to Get Zekrom, Reshiram and Kyurem in Pokemon GO - Prima Games

Reshiram, #Zekrom & #Kyurem will soon - Couple of Gaming

pokemongo] shiny zekrom and reshiram both on first try??? guess

Shiny Zekrom at my second raid.. but reshiram not Even un 38 raid

SHINY Nihilego Guzzlord Groudon Reshiram Zekrom with Fusion

Pokemon Go Reshiram Raid Guide, best counters and how to catch a