Programmatically change the background color of iTerm - or set it randomly

change-iterm-background-color.sh

set_term_bgcolor(){
  local R=$1
  local G=$2
  local B=$3
  /usr/bin/osascript <<EOF
	tell application "iTerm"
	  tell current session of current window
	      set background color to {$(echo "scale=2; ($1/255.0)*65535" | bc),$(echo "scale=2; ($2/255.0)*65535" | bc),$(echo "scale=2; ($3/255.0)*65535" | bc)}
	  end tell
	end tell
EOF
}

set_random_bgcolor(){
	set_term_bgcolor $(echo $(echo 0."$RANDOM")*255 | bc) $(echo $(echo 0."$RANDOM")*255 | bc) $(echo $(echo 0."$RANDOM")*255 | bc)
}

This is great for helping you to come up with new color palettes. I rely on 4-5 different ones and feel like I've run out of options.