diff --git a/fish_prompt.fish b/fish_prompt.fish
index e72d0ad..8252295 100644
--- a/fish_prompt.fish
+++ b/fish_prompt.fish
@@ -15,40 +15,40 @@
 #     set -g theme_display_user yes
 #     set -g default_user your_normal_user
 
-set -g current_bg NONE
+set -g __bobthefish_current_bg NONE
 
 # Powerline glyphs
-set branch_glyph            \uE0A0
-set ln_glyph                \uE0A1
-set padlock_glyph           \uE0A2
-set right_black_arrow_glyph \uE0B0
-set right_arrow_glyph       \uE0B1
-set left_black_arrow_glyph  \uE0B2
-set left_arrow_glyph        \uE0B3
+set __bobthefish_branch_glyph            \uE0A0
+set __bobthefish_ln_glyph                \uE0A1
+set __bobthefish_padlock_glyph           \uE0A2
+set __bobthefish_right_black_arrow_glyph \uE0B0
+set __bobthefish_right_arrow_glyph       \uE0B1
+set __bobthefish_left_black_arrow_glyph  \uE0B2
+set __bobthefish_left_arrow_glyph        \uE0B3
 
 # Additional glyphs
-set detached_glyph          \u27A6
-set nonzero_exit_glyph      '! '
-set superuser_glyph         '$ '
-set bg_job_glyph            '% '
+set __bobthefish_detached_glyph          \u27A6
+set __bobthefish_nonzero_exit_glyph      '! '
+set __bobthefish_superuser_glyph         '$ '
+set __bobthefish_bg_job_glyph            '% '
 
 # Colors
-set lt_green   addc10
-set med_green  189303
-set dk_green   0c4801
+set __bobthefish_lt_green   addc10
+set __bobthefish_med_green  189303
+set __bobthefish_dk_green   0c4801
 
-set lt_red     C99
-set med_red    ce000f
-set dk_red     600
+set __bobthefish_lt_red     C99
+set __bobthefish_med_red    ce000f
+set __bobthefish_dk_red     600
 
-set slate_blue 255e87
+set __bobthefish_slate_blue 255e87
 
-set lt_orange  f6b117
-set dk_orange  3a2a03
+set __bobthefish_lt_orange  f6b117
+set __bobthefish_dk_orange  3a2a03
 
-set dk_grey    333
-set med_grey   999
-set lt_grey    ccc
+set __bobthefish_dk_grey    333
+set __bobthefish_med_grey   999
+set __bobthefish_lt_grey    ccc
 
 # ===========================
 # Helper methods
@@ -62,9 +62,9 @@ function __bobthefish_git_branch -d 'Get the current git branch (or commitish)'
   set -l ref (command git symbolic-ref HEAD 2> /dev/null)
   if [ $status -gt 0 ]
     set -l branch (command git show-ref --head -s --abbrev |head -n1 2> /dev/null)
-    set ref "$detached_glyph $branch"
+    set ref "$__bobthefish_detached_glyph $branch"
   end
-  echo $ref | sed  "s-refs/heads/-$branch_glyph -"
+  echo $ref | sed  "s-refs/heads/-$__bobthefish_branch_glyph -"
 end
 
 function __bobthefish_pretty_parent -d 'Print a parent directory, shortened to fit the prompt'
@@ -88,29 +88,29 @@ end
 function __bobthefish_start_segment -d 'Start a prompt segment'
   set_color -b $argv[1]
   set_color $argv[2]
-  if [ "$current_bg" = 'NONE' ]
+  if [ "$__bobthefish_current_bg" = 'NONE' ]
     # If there's no background, just start one
     echo -n ' '
   else
     # If there's already a background...
-    if [ "$argv[1]" = "$current_bg" ]
+    if [ "$argv[1]" = "$__bobthefish_current_bg" ]
       # and it's the same color, draw a separator
-      echo -n "$right_arrow_glyph "
+      echo -n "$__bobthefish_right_arrow_glyph "
     else
       # otherwise, draw the end of the previous segment and the start of the next
-      set_color $current_bg
-      echo -n "$right_black_arrow_glyph "
+      set_color $__bobthefish_current_bg
+      echo -n "$__bobthefish_right_black_arrow_glyph "
       set_color $argv[2]
     end
   end
-  set current_bg $argv[1]
+  set __bobthefish_current_bg $argv[1]
 end
 
 function __bobthefish_path_segment -d 'Display a shortened form of a directory'
   if test -w "$argv[1]"
-    __bobthefish_start_segment $dk_grey $med_grey
+    __bobthefish_start_segment $__bobthefish_dk_grey $__bobthefish_med_grey
   else
-    __bobthefish_start_segment $dk_red $lt_red
+    __bobthefish_start_segment $__bobthefish_dk_red $__bobthefish_lt_red
   end
 
   set -l directory
@@ -134,13 +134,13 @@ function __bobthefish_path_segment -d 'Display a shortened form of a directory'
 end
 
 function __bobthefish_finish_segments -d 'Close open prompt segments'
-  if [ -n $current_bg -a $current_bg != 'NONE' ]
+  if [ -n $__bobthefish_current_bg -a $__bobthefish_current_bg != 'NONE' ]
     set_color -b normal
-    set_color $current_bg
-    echo -n "$right_black_arrow_glyph "
+    set_color $__bobthefish_current_bg
+    echo -n "$__bobthefish_right_black_arrow_glyph "
     set_color normal
   end
-  set -g current_bg NONE
+  set -g __bobthefish_current_bg NONE
 end
 
 
@@ -155,18 +155,18 @@ function __bobthefish_prompt_status -d 'Display symbols for a non zero exit stat
 
   # Last exit was nonzero
   if [ $RETVAL -ne 0 ]
-    set nonzero $nonzero_exit_glyph
+    set nonzero $__bobthefish_nonzero_exit_glyph
   end
 
   # if superuser (uid == 0)
   set -l uid (id -u $USER)
   if [ $uid -eq 0 ]
-    set superuser $superuser_glyph
+    set superuser $__bobthefish_superuser_glyph
   end
 
   # Jobs display
   if [ (jobs -l | wc -l) -gt 0 ]
-    set bg_jobs $bg_job_glyph
+    set bg_jobs $__bobthefish_bg_job_glyph
   end
 
   set -l status_flags "$nonzero$superuser$bg_jobs"
@@ -174,18 +174,18 @@ function __bobthefish_prompt_status -d 'Display symbols for a non zero exit stat
   if test "$nonzero" -o "$superuser" -o "$bg_jobs"
     __bobthefish_start_segment fff 000
     if [ "$nonzero" ]
-      set_color $med_red --bold
-      echo -n $nonzero_exit_glyph
+      set_color $__bobthefish_med_red --bold
+      echo -n $__bobthefish_nonzero_exit_glyph
     end
 
     if [ "$superuser" ]
-      set_color $med_green --bold
-      echo -n $superuser_glyph
+      set_color $__bobthefish_med_green --bold
+      echo -n $__bobthefish_superuser_glyph
     end
 
     if [ "$bg_jobs" ]
-      set_color $slate_blue --bold
-      echo -n $bg_job_glyph
+      set_color $__bobthefish_slate_blue --bold
+      echo -n $__bobthefish_bg_job_glyph
     end
   end
 end
@@ -193,7 +193,7 @@ end
 function __bobthefish_prompt_user -d 'Display actual user if different from $default_user'
   if [ "$theme_display_user" = 'yes' ]
     if [ "$USER" != "$default_user" -o -n "$SSH_CLIENT" ]
-      __bobthefish_start_segment $lt_grey $slate_blue
+      __bobthefish_start_segment $__bobthefish_lt_grey $__bobthefish_slate_blue
       echo -n -s (whoami) '@' (hostname | cut -d . -f 1) ' '
     end
   end
@@ -212,15 +212,15 @@ function __bobthefish_prompt_git -d 'Display the actual git state'
   set -l flags   "$dirty$staged$stashed$ahead$new"
   test "$flags"; and set flags " $flags"
 
-  set -l flag_bg $lt_green
-  set -l flag_fg $dk_green
+  set -l flag_bg $__bobthefish_lt_green
+  set -l flag_fg $__bobthefish_dk_green
   if test "$dirty" -o "$staged"
-    set flag_bg $med_red
+    set flag_bg $__bobthefish_med_red
     set flag_fg fff
   else
     if test "$stashed"
-      set flag_bg $lt_orange
-      set flag_fg $dk_orange
+      set flag_bg $__bobthefish_lt_orange
+      set flag_fg $__bobthefish_dk_orange
     end
   end
 
@@ -236,7 +236,7 @@ function __bobthefish_prompt_git -d 'Display the actual git state'
     if test -w "$PWD"
       __bobthefish_start_segment 333 999
     else
-      __bobthefish_start_segment $med_red $lt_red
+      __bobthefish_start_segment $__bobthefish_med_red $__bobthefish_lt_red
     end
 
     echo -n -s $project_pwd ' '