Antifreeze questions ?

I've got a few questions about what antifreeze I should be using in 2 of my rides. The first is a SB mopar with iron block& heads and an aluminum radiator (what color/type antifreeze should be in it )?
The second is a 2.5 mopar 4cyl with iron block & aluminum head and a aluminum radiator (color type)
Or does it really make a difference ?????

I use the Green Auto Zone stuff. I buy the straight stuff. Last winter I used a straight mix with just a little distilled water. Then come better weather I flushed it out and did a 60/40 mix. The Auto Zone green has protected mine just fine. I have a Champion 4 core radiator.