Set the iTerm background programatically

iterm_bg.sh

# Changes the background color of 
# iTerm window using applescript
# 
# @param colorMatrix {Object} -- {100,0,0}
#
# @usage adjustBackground "{100,0,0}"

adjustBackground() {
  osascript -e "tell application \"iTerm\"
    set current_terminal to (current terminal)
    tell current_terminal
      set current_session to (current session)
      tell current_session
        set background color to $1
      end tell
    end tell
  end tell"
}