blue? wow, sounds like honda coolant or washer fluid... use prestone 50/50(not GM Dexcool) until you get your problem solved(ASAP), then flush your cooling system and put in the original coolant from Mazda(green or orange) or prestone.
I was wrong its green, just picked up some advanced auto brand antifreeze. It says i can mix with any color in any vehicle, its a 50/50 mix. Safe to use?