The lesson
Open a safety deck with a documentary photo of the hazard and a single yellow line of mission, with no product shown.
A high-contrast black and white photo shows a worker on a ladder at a tangle of overhead wires. A yellow bolt and "PROXXI" sit at the left, and a yellow bar across the right reads "MAKE ELECTRICITY SAFE". Black, white and safety yellow are the only colors.
Don't copy a photo of real workers unless you have rights and consent. Keep one honest hazard image, a restrained palette and a mission line in place of a product pitch.