: how do I make maps survival maps?
There's no built-in survival gametype. Look for Survival.lua on simplici7y.com. You can use that to play a survival game on whatever maps you create.
: Whats JUICE mainly used for?
I think JUICE has been supplanted by Atque and Weland. Those are the primary tools now for working with map files, and can probably handle whatever you need to do.
: What are the text colors from 0 ot 7?
Green, white, red, dark green, cyan, yellow, dark red, and blue -- by default. You can change them with MML.