BMW and VW use a "blue" coolant, G-48. Honda uses a blue-green 50/50 premix available in quarts.
I would run Sierra or Prestone Low-Tox, just in case you spring a leak and the risk of poisoning a pet(if you have one) or others is minuscule.
Cummins dealers sell blue coolant.
But I think you'd better go with that newegg link. I suspect that CPU coolant isn't really the same as automotive coolant.
And, FYI, coolant in automotive applications can not be identified SOLELY by color. It's a good place to start- but you have to look at color and application (e.g. there are MULTIPLE types of red/pink/orange coolant).