Colors of the rainbow, curios, so I checked the various colors of
antifreeze on the market.
Colors of the rainbow about cover it. Let's add pink, orange and blue to the mix. Do not top up your
antifreeze based on the color. Japanese
antifreeze mix is different than American mixes and are not compatible with just another brand of the same color. In most cases you can't go wrong with the "green stuff" (old school), but change it every two years or so as the additives will be depleted.
...or, just run Evan's and be done with the changes and get max protection all around and all year around. Like I said, I just don't see a down side here considering the available options and other choices.