Clean up appearance lib file and redundant `colors` calls in other files

lib/theme-and-appearance.zsh

 # ls colors
-autoload colors; colors;
+autoload -U colors && colors
 export LSCOLORS="Gxfxcxdxbxegedabagacad"
-#export LS_COLORS
 
 # Enable ls colors
 if [ "$DISABLE_LS_COLORS" != "true" ]
 then
   # Find the option for using colors in ls, depending on the version: Linux or BSD
   if [[ "$(uname -s)" == "NetBSD" ]]; then
-    # On NetBSD, test if "gls" (GNU ls) is installed (this one supports colors); 
+    # On NetBSD, test if "gls" (GNU ls) is installed (this one supports colors);
     # otherwise, leave ls as is, because NetBSD's ls doesn't support -G
     gls --color -d . &>/dev/null 2>&1 && alias ls='gls --color=tty'
   elif [[ "$(uname -s)" == "OpenBSD" ]]; then
@@ -23,7 +22,7 @@ fi
 #setopt no_beep
 setopt auto_cd
 setopt multios
-setopt cdablevarS
+setopt cdablevars
 
 if [[ x$WINDOW != x ]]
 then
@@ -43,4 +42,3 @@ ZSH_THEME_GIT_PROMPT_CLEAN=""               # Text to display if the branch is c
 
 # Setup the prompt with pretty colors
 setopt prompt_subst
-

plugins/git-prompt/git-prompt.plugin.zsh

@@ -2,9 +2,6 @@
 # http://github.com/olivierverdier/zsh-git-prompt
 #
 export __GIT_PROMPT_DIR=$ZSH/plugins/git-prompt
-# Initialize colors.
-autoload -U colors
-colors
 
 # Allow for functions in the prompt.
 setopt PROMPT_SUBST

plugins/jump/jump.plugin.zsh

@@ -27,7 +27,6 @@ unmark() {
 	rm -i "$MARKPATH/$1"
 }
 
-autoload colors
 marks() {
 	for link in $MARKPATH/*(@); do
 		local markname="$fg[cyan]${link:t}$reset_color"

themes/adben.zsh-theme

@@ -69,17 +69,17 @@ function precmd {
         #Choose from all databases, regardless of whether they are considered "offensive"
         fortune -a
     }
-    #obtains the tip 
+    #obtains the tip
     ps1_command_tip () {
         wget -qO - http://www.commandlinefu.com/commands/random/plaintext | sed 1d | sed '/^$/d'
-    }  
+    }
     prompt_header () {
         if [[ "true" == "$ENABLE_COMMAND_TIP" ]]; then
             ps1_command_tip
         else
             ps1_fortune
-        fi 
-    }   
+        fi
+    }
     PROMPT_HEAD="${RED_START}${PR_YELLOW}$(prompt_header)${PR_RESET}"
     # set a simple variable to show when in screen
     if [[ -n "${WINDOW}" ]]; then
@@ -99,11 +99,8 @@ prompt_context () {
 set_prompt () {
     # required for the prompt
     setopt prompt_subst
-    autoload colors zsh/terminfo
-    if [[ "$terminfo[colors]" -gt 8 ]]; then
-        colors
-    fi 
-    
+    autoload zsh/terminfo
+
     # ######### PROMPT #########
     PROMPT='${PROMPT_HEAD}
 ${RED_START}$(prompt_context)

themes/apple.zsh-theme

@@ -7,7 +7,6 @@ get_git_dirty() {
 }
 
 autoload -Uz vcs_info
-autoload -U colors && colors
 zstyle ':vcs_info:*' check-for-changes true
 zstyle ':vcs_info:*' unstagedstr '%F{red}*'   # display this when there are unstaged changes
 zstyle ':vcs_info:*' stagedstr '%F{yellow}+'  # display this when there are staged changes

themes/gnzh.zsh-theme

@@ -2,8 +2,7 @@
 # Based on bira theme
 
 # load some modules
-autoload -U colors zsh/terminfo # Used in the colour alias below
-colors
+autoload -U zsh/terminfo # Used in the colour alias below
 setopt prompt_subst
 
 # make some aliases for the colours: (could use normal escape sequences too)

themes/half-life.zsh-theme

@@ -13,8 +13,6 @@ function virtualenv_info {
 PR_GIT_UPDATE=1
 
 setopt prompt_subst
-autoload colors
-colors
 
 autoload -U add-zsh-hook
 autoload -Uz vcs_info

themes/jonathan.zsh-theme

@@ -44,10 +44,7 @@ setprompt () {
     ###
     # See if we can use colors.
 
-    autoload colors zsh/terminfo
-    if [[ "$terminfo[colors]" -ge 8 ]]; then
-	colors
-    fi
+    autoload zsh/terminfo
     for color in RED GREEN YELLOW BLUE MAGENTA CYAN WHITE GREY; do
 	eval PR_$color='%{$terminfo[bold]$fg[${(L)color}]%}'
 	eval PR_LIGHT_$color='%{$fg[${(L)color}]%}'

themes/kolo.zsh-theme

-autoload -U colors && colors
-
 autoload -Uz vcs_info
 
 zstyle ':vcs_info:*' stagedstr '%F{green}●'

themes/mikeh.zsh-theme

 setopt prompt_subst
-autoload colors
-colors
 
 autoload -U add-zsh-hook
 autoload -Uz vcs_info

themes/simonoff.zsh-theme

@@ -63,10 +63,7 @@ setprompt () {
 ###
 # See if we can use colors.
 
-    autoload colors zsh/terminfo
-    if [[ "$terminfo[colors]" -ge 8 ]]; then
-    colors
-    fi
+    autoload zsh/terminfo
     for color in RED GREEN YELLOW BLUE MAGENTA CYAN WHITE; do
     eval PR_$color='%{$terminfo[bold]$fg[${(L)color}]%}'
     eval PR_LIGHT_$color='%{$fg[${(L)color}]%}'

themes/steeef.zsh-theme

@@ -15,8 +15,6 @@ function virtualenv_info {
 PR_GIT_UPDATE=1
 
 setopt prompt_subst
-autoload colors
-colors
 
 autoload -U add-zsh-hook
 autoload -Uz vcs_info

themes/zhann.zsh-theme

-autoload -U colors && colors
-
 autoload -Uz vcs_info
 
 zstyle ':vcs_info:*' stagedstr '%F{green}●'