How to Unlock 256‑Color Support in Your Terminal for Vim, Git, and More

Vim

Many terminals support 256 colors, allowing Vim to display richer color schemes. Add the following to your .vimrc to enable a 256‑color palette when the terminal reports support:

if $TERM == "xterm" || $TERM == "rxvt" || $TERM == "xterm-256color" || $TERM == "rxvt-unicode" || &term =~ "builtin_gui" || $TERM == "dumb"
    set t_Co=256
    colorscheme calmar256-dark
else
    colorscheme desert
endif

mutt

To give mutt a 256‑color theme, source the provided color file from your .muttrc:

source ~/.mutt/mutt_color_256

slrn

slrn can display 256 colors, though many UI elements remain monochrome.

git

After enabling 256 colors, git log output becomes softer and more readable.

man / less

For Xterm or Urxvt, you can customize foreground, background, bold, underline, and italic colors to improve less highlighting, which also enhances man page appearance. Adding the -J option to the $LESS environment variable marks matching lines with an asterisk.

Window status bar

Many users like a status bar at the bottom of the terminal, especially when using screen to split the window into multiple panes.

ls

Enabling 256‑color output also improves the visual appearance of ls listings.

grep

Configure grep to highlight matches in green:

export GREP_COLOR='01;32'   # color grep matches green
alias grep='grep --color'

Feel free to share your own color schemes.