Make zsh prompt readable on non solarized light background

zshrc

@@ -51,6 +51,7 @@ cd $CUR_DIR
 # Configuration for virtualenv
 export WORKON_HOME=$HOME/.virtualenvs
 source /usr/local/bin/virtualenvwrapper.sh > /dev/null 2>&1
+source /usr/bin/virtualenvwrapper.sh > /dev/null 2>&1
 
 
 # Configuration for ROS
@@ -171,7 +172,7 @@ case ${SOLARIZED_THEME:-dark} in
     *)     local bkg=black;;
 esac
 
-local ZSH_THEME_GIT_PROMPT_PREFIX="%{%K{${bkg}}$fg_bold[green]%}[%{$fg_bold[blue]%}"
+local ZSH_THEME_GIT_PROMPT_PREFIX="%{$fg_bold[green]%}[%{$fg_bold[blue]%}"
 local ZSH_THEME_GIT_PROMPT_SUFFIX="%{$fg_bold[green]%}]"
 local ZSH_THEME_GIT_PROMPT_CLEAN="%{$fg_no_bold[green]%}✓"
 local ZSH_THEME_GIT_PROMPT_AHEAD="%{$fg_no_bold[cyan]%}▴"
@@ -180,8 +181,8 @@ local ZSH_THEME_GIT_PROMPT_STAGED="%{$fg_no_bold[green]%}●"
 local ZSH_THEME_GIT_PROMPT_UNSTAGED="%{$fg_no_bold[yellow]%}●"
 local ZSH_THEME_GIT_PROMPT_UNTRACKED="%{$fg_no_bold[red]%}●"
 
-local ZSH_THEME_VIRTUALENV_PREFIX=" %{$fg_bold[green]%}(%{%b%K{${bkg}}$fg[green]%}"
+local ZSH_THEME_VIRTUALENV_PREFIX=" %{$fg_bold[green]%}(%{%b$fg[green]%}"
-local ZSH_THEME_VIRTUALENV_SUFFIX="%{$reset_color%K{${bkg}}$fg_bold[green]%})%{$reset_color%K{${bkg}}%}"
+local ZSH_THEME_VIRTUALENV_SUFFIX="%{$reset_color$fg_bold[green]%})%{$reset_color%}"
 
 # Depending if root or not, displays the right prompt char
 # and changes the color of the username
@@ -210,7 +211,7 @@ function _prompt_chars() {
     local _GIT_CHAR=' '
   fi
 
-  local _VENV_PROMPT="%{%K{${bkg}}%}$(virtualenv_prompt_info)"
+  local _VENV_PROMPT="%{%}$(virtualenv_prompt_info)"
 
   echo "$_GIT_CHAR$_VENV_PROMPT $_LIBERTY"
 }
@@ -329,7 +330,7 @@ PROMPT="%{$reset_color%}
 "
 
 # Username, red when logged as root
-PROMPT+="%{%K{${bkg}}%}"'$_USERNAME'
+PROMPT+='$_USERNAME'
 
 # @ symbol
 PROMPT+="%{$fg_bold[blue]%}@"
@@ -338,7 +339,7 @@ PROMPT+="%{$fg_bold[blue]%}@"
 PROMPT+="%{$fg_bold[$couleur_hote]%}"'%m'
 
 # White space to separate host from pwd
-PROMPT+=" %{$reset_color%K{${bkg}}%}"
+PROMPT+=" %{$reset_color%}"
 
 # Current working directory, use ~ when needed
 PROMPT+="%{$fg[yellow]%}"'%~'
@@ -348,7 +349,7 @@ PROMPT+="%{$fg_bold[green]%} %E
 "
 
 # Prompt characters for virtualenv, git and zsh
-PROMPT+="%{%K{${bkg}}%}"'$(_prompt_chars)'" %{$reset_color%}"
+PROMPT+='$(_prompt_chars)'" %{$reset_color%}"
 
 # Right prompt with current repo informations
 RPROMPT='$(space_sh_git_prompt)'"%E%{$reset_color%}"