How do you make backlight on g-shock change colors?

To change the backlight color on a G-Shock watch, you typically need to access the settings via the watch's mode button. Hold down the appropriate button (usually labeled with a "Light" or "Mode" icon) until the backlight color options appear. Cycle through the available colors and select your preference. Keep in mind that not all G-Shock models have customizable backlight colors, so refer to your specific model's manual for precise instructions.