Set iTerm2 Background Color per Git Repo (zsh)

gistfile1.sh

set_color() {
  local HEX_FG=$1
  local HEX_BG=$2
  local OPACITY=$3

  local FG_R=`echo $HEX_FG | sed 's/../0x&,/g' | awk -F "," '{printf("%d",$1 * 257)}'`
  local FG_G=`echo $HEX_FG | sed 's/../0x&,/g' | awk -F "," '{printf("%d",$2 * 257)}'`
  local FG_B=`echo $HEX_FG | sed 's/../0x&,/g' | awk -F "," '{printf("%d",$3 * 257)}'`
  local BG_R=`echo $HEX_BG | sed 's/../0x&,/g' | awk -F "," '{printf("%d",$1 * 257)}'`
  local BG_G=`echo $HEX_BG | sed 's/../0x&,/g' | awk -F "," '{printf("%d",$2 * 257)}'`
  local BG_B=`echo $HEX_BG | sed 's/../0x&,/g' | awk -F "," '{printf("%d",$3 * 257)}'`

  /usr/bin/osascript <<EOF
tell application "iTerm"
   tell current session of current terminal
      set foreground color to {$FG_R, $FG_G, $FG_B}
      set background color to {$BG_R, $BG_G, $BG_B}
      set transparency to "$OPACITY"
   end tell
end tell
EOF
}

## Set background color for specific directories
## Uses git config to set the color
## To set the color (fg, bg, transparency):
##   git config --global core.bgcolor "ffffff 000000 0.1"
##   git config core.bgcolor "ffffff 000000 0.1"
function chpwd() {
  BGCOLOR=$(git config --get core.bgcolor)

  if [[ -n $BGCOLOR && ($CURRENTBG != $BGCOLOR) ]]
  then eval set_color $BGCOLOR; CURRENTBG=$BGCOLOR
  fi
}