Berry discovery and pruning

Dd came rushing in with these little berries she'd found.
DS pointed out the size difference and colour difference...youngest green smallest to oldest blue/white biggest.

Dd picked a Hebe and compared the leaves of the two plants together. She asked the name of the ground cover....
Coprosma
But why is it the berries are blue not orange?
She pointed out all the others that had orange berries.
We talked about plant species...and left it there ;-)