Haha the colour has nothing to do with what's in it, the colour is only relevant to the previous generations of the same coolant from the same manufacturer. This is why i said you can't mix VW blue with VW pink. Basically I could tell you many reasons why the VW stuff is best for your VR, which involves having to go into much boring technical details about the base ingredients and errosion protection etc etc for example vauxhall coolant is actually based on acid, which is fine for vauxhall as they are designed to take it, but the details even bore me and I am a technical minded person.