LS_COLORS="di=01;34" #directory color
LS_COLORS=$LS_COLORS":ln=01;36" #link color
LS_COLORS=$LS_COLORS":so=01;35" #socket color
LS_COLORS=$LS_COLORS":pi=40;33" #pipe color
LS_COLORS=$LS_COLORS":ex=32" #executable color
LS_COLORS=$LS_COLORS":bd=40;33" #block device color
LS_COLORS=$LS_COLORS":cd=40;33;01" #char device color
LS_COLORS=$LS_COLORS":su=37;41" #setuid executable color (i.e. sudo)
LS_COLORS=$LS_COLORS":sg=30;43" #setgid executable color 
export LS_COLORS
alias ls="ls --color"