The actual colors to be used are configured using the environment variable
LT_COLORS
(note plural). The value is a colon-separated list of
pairs. The keys specify what the color is to be used for. The values are
SGR (Select Graphic Rendition) specifications, which are interpreted by the
terminal.
key
=value
The following keys are currently in use:
error
used to highlight the text “error” in error messages
warning
used to highlight the text “warning” in warning messages
locus
used to highlight location information (e.g., program name and file name) in messages
The default value is error=01;31:warning=01;35:locus=01
(01;31
= bold red, 01;35
= bold
magenta, 01
= bold default color).
This color specification format is also used by other software packages such as GCC, GNU coreutils, and GNU grep.