Vim ships with a number of standard color schemes for both light and dark
backgrounds. You can also find and install many others. To set your color
scheme, you can use the :colorscheme command. You can quickly see what
color schemes are available by typing :colorscheme and then tabbing for
completion. For instance, you can set the delek color scheme by entering
:colorscheme delek
See :h colorscheme for more details.