So I just received a HUGE lot of kids from Japan and amongst them were these guys...

Does anyone have any info on why they’re different colours? I know Shiny Dragonair is pink so it can’t be that, is this just a factory mistake? They both say 1997 on the back too which has me confused as they appear to be from the same release.
Any info would be greatly appreciated and if you’re looking for any Kids I have 100s now so let me know! I don’t have sales permission but can trade!
Thanks!