Shiny Pokemon Coincidence

[Zachatello00]

I just noticed tonight that Sawk, a blue Pokemon and Throh, a red pokemon have interesting colors on their shiny version. Shiny Sawk is Purple, and Shiny Throh is Orange. Probably just a coincidence, but total turtle colors!

http://www.serebii.net/pokedex-bw/539.shtml
http://www.serebii.net/pokedex-bw/538.shtml

[Samhain]

Turtles are green.

[Zachatello00]

I suppose I have no choice but to submit to your keen observation.

their mask colors however...