Customize colors

buku allows you to customize the color scheme via a five-letter string, reminiscent of BSD LSCOLORS. The five letters represent the colors of

• index
• title
• url
• description/comment/note
• tag

respectively. The five-letter string is passed in either as the argument to the --colors option, or as the value of the environment variable BUKU_COLORS.

We offer the following colors/styles:

Letter	Color/Style
a	black
b	red
c	green
d	yellow
e	blue
f	magenta
g	cyan
h	white
i	bright black
j	bright red
k	bright green
l	bright yellow
m	bright blue
n	bright magenta
o	bright cyan
p	bright white
A-H	bold version of the lowercase-letter color
I-P	bold version of the lowercase-letter bright color
x	normal
X	bold
y	reverse video
Y	bold reverse video

The default colors string is oKlxm, which stands for

• bright cyan index
• bold bright green title
• bright yellow url
• normal description
• bright blue tag

Note that

• Bright colors (implemented as \x1b[90m–\x1b[97m) may not be available in all color-capable terminal emulators;
• Some terminal emulators draw bold text in bright colors instead;
• Some terminal emulators only distinguish between bold and bright colors via a default-off switch.
• The environment variable NO_COLOR is supported (Ref.: https://no-color.org/).

Please consult the manual of your terminal emulator as well as the Wikipedia article on ANSI escape sequences.

Windows support

By default colors are disabled on Windows because cmd doesn't understand POSIX color sequences. However,

• option --colors enables colors
• environment variable BUKU_COLORS, if set, enables colors
• buku can detect ConEmu and show color codes