InteractiveShell.colors

## Set the color scheme (NoColor, Neutral, Linux, or LightBG).
#  Choices: any of ['Neutral', 'NoColor', 'LightBG', 'Linux'] (case-insensitive)
#  Default: 'Neutral'

You can select from a few color schemes— I use a dark background for my terminal so the default Neutral works for me, but try out LightBG if you use a light background color, or Linux if you’re really into Linux, or NoColor if you hate rainbows and happiness.

c.InteractiveShell.colors = 'LightBG'

You can also change this on-the-fly in the shell by invoking the magic command %colors:

%colors Linux