Notes:

CoroCoro Ichiban magazine has revealed a different color scheme for Magearna which more closely matches the coloring of a Poke Ball. Thanks goes to Hannes S. for the translation!

"Magearna looked different 500 years ago! You are getting this confidential material exclusively in this magazine!
When Magearna was serving the Azoth Kingdom 500 years ago, it seems it had these gorgeous colors and patterns.
Isn’t it surprising it has such a different form from how it appears now? Come witness how amazing it looks in theaters!"