This enhance the vision effect. Sometimes the video is dim, this extension adjusts the brightness better, makes the image more bright and clear. It supports HTML5 video & YouTube™.
In Turn Off the Lights browser extension version 3.2 and higher you can add a filter in the video content. You can change your colors to the follwing filters:
Open your Turn Off the Lights options page, and in the Advanced Options enable the "Video Control" bar.