デバイスの最小以下の画面を暗くします。
At times the device screen brightness is still high despite dimming it to the device's minimum. This application is quite useful in such situations. A black screen filter is laid over the entire screen to filter out the excess brightness. If blue light is an issue, especially at night, a red filter can be used. In addition, when a custom-colored filter is required, one can use a filter whose color is determined by the AARRGGBB color system.