Did you follow the documentation for Colorist? It seems like you're mixing the concepts.
For example, if you want to print a full line of coloured text, it's easiest to this this:
from colorist import red
red("hello world")
Or you can also add colour to specific parts of the text string for more customisation:
from colorist import Color
print(f"hello {Color.RED}world{Color.OFF}")
In full transparency, I'm the author of Colorist.