Goal: Go to Google Play Books app & change the theme style to Light
Steps:
action: action_type: open_app
app_name: Google Play Books
step_instruction: open Google Play Books app
action: action_type: navigate_back
step_instruction: go back
action: action_type: click
step_instruction: click on the font icon at the top of the screen
action: action_type: click
step_instruction: select the light theme under viewing theme option