In all honesty, I think the colour thing can be a bit of a curve ball...especially if we are talking different continents and world regions but Im happy to be corrected...
The type of antifreeze you use is important because in your case, you have engine materials that are aluminium...not just the radiator. Most have additives but not all additives are friendly with the aluminium...
Find a coolant that is specified for aluminium blocks, and you should be good to go. I recommend you use deionised water also....
edit- flush coolant and replace every two years...
(Pretty sure that's how you spell aluminium Uncle Sam !)