Cooling frost protection

Good evening and first of all a warm hello from my side! To my question, everything google has brought only confusion… My cooler frost protection in Swift 2008 was empty a few months ago and now it is again. The seller at ATU told me, just tip the same color pure. Said, done (green). But now I was in a hardware store and there I was sold G12+, as the right thing. The G12+ is reddish at least at Norauto. The purchased green from ATU is a G64, which I am looking for in the then I have seen through Google that Suzuki sells seemingly large packs of green cooling liquid, but I did not find out the name in G. So my question: Does one have a resolution for the question and above all these are to mix together without any problems? Thank you very much in advance!