Using this LED night light is super easy. Just connect the USB interface to a power source, and your light will come on. It's a great addition to any room to create a warm and romantic atmosphere. As for the color, remember that it might look a bit different from what you see on your screen because of monitor and light effects. Also, there's a small size difference due to manual measurement. When it comes to maintenance, keep it clean by gently wiping the acrylic light panel with a soft, dry cloth. Avoid getting the light wet as it could damage the electrical components. If you have any issues or questions, don't hesitate to contact us.