Is that mix so your paint doesn't freeze?

Also hot coffee or tea are necessary besides warm clothes, because it helped me to have more time in reserve before I will start to freeze

Yes! I tried to mix water with vodka, but failed with proportions twice and it's was freezing anyway, so used 100% vodka next time. But then I've dealt with color getting less intense and read that sugar helps to pervent spirit «eating» too much color, so I use mix.