Well the only other stuff thats pinkish could be your anti-freeze if its not trans fluid, or there's also your power steering fluid, but thats the same as trans fluid. 
It's a water substance, I don't know too much besides the coloring and how it feels, that was the purpose of this post.. To get an idea of what it is. It's slight orange, if it is dexcool, where do I go from here?Dude, you have to help us out here. We can only use one sense (vision) whereas you have a bunch available to you. Is it slippery? I am sure you can tell the difference between oil/trans fluid and water substances. Transmission fluid is generally red-ish, as is power steering fluid and some engine oils. Water-based fluids like Dexcool engine coolant is a slight orange, some kinds of windshield washer mix are amber also. Engine oils are often yellow/amber-ish to brown. Water-based fluids would have evaporated overnight. Oils not so much.
Check your antifreeze level at the radiator if its full check your reservoir if its also full its probably washer fluid but if your missing antifreeze then refill it and turn car on and observe where it leaksIt's a water substance, I don't know too much besides the coloring and how it feels, that was the purpose of this post.. To get an idea of what it is. It's slight orange, if it is dexcool, where do I go from here?