Goal: I want to change the theme of the book.
Steps:
action: action_type: click
step_instruction: Click on the back icon on the top left corner of the screen.
action: action_type: click
step_instruction: Click on the settings icon on the screen.
action: action_type: click
step_instruction: Click on the color mode option on the screen.
action: action_type: click
step_instruction: Click on the Night option on the screen.