Blue has blue eyes. Green has green eyes. La-di-dah, the world goes round, what a nice day it is.
Meanwhile, the translators of Viz will go about their edits and cuts of lewd behavior that children are clearly too young to cope with and hope that no one will expect them to get to the FireRed/LeafGreen arc before they move on to some other project (because, after all, Pokemon isn't that popular anyway, silly readers). >.>
Honestly, I'm more curious as to why the parents of these kids (if they even exist, in some cases) decided to name their children after the colors of their irises. I mean, talk about a running gag growing up. Oh, well, there probably isn't an in-universe reason anyway.