Welcome! That kinda looks like atf to me too. There might be aftermarket cvt fluid that has a red tinge? I dunno.... The factory stuff does have a bit of a blueish/green tinge to it when used. New looks almost clear. The Klondike brand universal cvt fluid that I use looks like engine oil, gold with no blue or green tinge.
If in doubt I'd probably change it. As for how much fluid comes out. 2.5L should come out from the drain plug with the car level (not jacked up in the front). I can't remember how much comes out from dropping the pan and filter(metal strainer). I started making a video of a car I'm messing with at work but it's been 2 weeks in the making and I haven't had time to do anything. I did measure how much fluid came out, I'll try to find it this weekend if I can. I usually measure what comes out but if you're dealing with a car that may not have ever had the proper fluid or level then that might not work out so well.
It's pretty much impossible to flush the fluid on these Mirage Cvt's unless you remove the heat exchanger on the front of the transmission and use somthing like this (don't buy this, I'm pretty sure it's not the correct part. It's just an example of what's needed no make flushing possible).
There is another forum member who had someone put atf in their cvt and they started having overheating problems which may or may not be related.
View my fuel log 2014 Mirage SE wussie cvt edition. 1.2 automatic: 37.7 mpg (US) ... 16.0 km/L ... 6.2 L/100 km ... 45.3 mpg (Imp)