Increase readability in utility init

modules/utility/init.zsh

@@ -69,6 +69,7 @@ if is-callable 'dircolors'; then
     else
       eval "$(dircolors)"
     fi
+
     alias ls="$aliases[ls] --color=auto"
   else
     alias ls="$aliases[ls] -F"
@@ -77,12 +78,12 @@ else
   # BSD Core Utilities
   if zstyle -t ':prezto:module:utility:ls' color; then
     # Define colors for BSD ls.
-    export LSCOLORS="exfxcxdxbxGxDxabagacad"
+    export LSCOLORS='exfxcxdxbxGxDxabagacad'
 
     # Define colors for the completion system.
-    export LS_COLORS="di=34:ln=35:so=32:pi=33:ex=31:bd=36;01:cd=33;01:su=31;40;07:sg=36;40;07:tw=32;40;07:ow=33;40;07:"
+    export LS_COLORS='di=34:ln=35:so=32:pi=33:ex=31:bd=36;01:cd=33;01:su=31;40;07:sg=36;40;07:tw=32;40;07:ow=33;40;07:'
 
-    alias ls="ls -G"
+    alias ls='ls -G'
   else
     alias ls='ls -F'
   fi