Blue Object Icons in Navigator

In latest 2015R3 version I see a minor color change of objects. Never saw this in betas before (though I never set focus on this).
May I ask why you have changed colors? Still a RB relict? Or is it a forecast for something?

the green ones were relics
the blue ones have been present in most, if not all, betas

Ah fine thx. My fault, never paid attention to this during beta.