When the FAB (Floating Action Button) is enabled, the icon bar is along the top.
When the FAB is disabled, the icon bar is along the bottom (except when using the new theme on 5.0... Google's decision).
You can keep using the new "juicy blue or any color you like really, with white icons" with or without the FAB.
But on the "FAB" vs. "icon bar along the bottom" thing -- you have a choice, but you have to choose.
( and if you're saying that you'd like to have both -- it probably means I've done a decent job... / pats himself on the shoulder...

)