fridge part 27..

so last night the refrigerator started leaking bluish purplish chemical smelling liquid anti-freeze? freon? I have no idea! a refrigerator repairman I am not. I did however call the repairman and even though it appears to be a new problem might as well stick with the same guy.So they can come out tomorrow between 6-10 my first thought was a little early but no big deal we are up by then but no it's p.m. He could show up at 10p.m. and quite frankly he has always run late so what is he going to show up at 11 or midnight? all I can imagine is telling him to put the dog up for the night, turn out the lights & lock up on his way out....