Facebook updated WhatsApp with the most requested feature from users everywhere — dark mode.

Dark mode for WhatsApp offers a fresh look on a familiar experience. It’s designed to reduce eye strain in low light environments.

Facebook said that it wanted to minimize eye fatigue and use colors that are closer to the system defaults on iPhone and Android respectively. The company also wanted to help users easily focus their attention on each screen. This was achieved by using color and other design elements to make sure the most important information stands out.

Users on Android 10 and iOS 13 can use dark mode by enabling it in system settings. Users on Android 9 and below can go into WhatsApp Settings > Chats > Theme and select Dark.

Dark mode, which is rolling out in the coming days on the latest version of WhatsApp.