From the BSD
ls man page:
LSCOLORS The value of this variable describes what color to use for which attribute when colors are enabled with CLICOLOR. This string is a concatena-
tion of pairs of the format fb, where f is the foreground color and b is the background color.
The color designators are as follows:
h light grey
A bold black, usually shows up as dark grey
B bold red
C bold green
D bold brown, usually shows up as yellow
E bold blue
F bold magenta
G bold cyan
H bold light grey; looks like bright white
x default foreground or background
Note that the above are standard ANSI colors. The actual display may differ depending on the color capabilities of the terminal in use.
The order of the attributes are as follows:
2. symbolic link
6. block special
7. character special
8. executable with setuid bit set
9. executable with setgid bit set
10. directory writable to others, with sticky bit
11. directory writable to others, without sticky bit
The default is "exfxcxdxbxegedabagacad", i.e. blue foreground and default background for regular directories, black foreground and red back-
ground for setuid executables, etc.
The default is "exfxcxdxbxegedabagacad"
The above means that a "11. directory writable to others, without sticky bit" will be
ac or black foreground with a green background.
Note that the directories highlighted mustard in your example are all writable to others while the non-highlighted directories are not.