Right now, there is no way to manually turn "Wind Down" (mainly the grayscale) on or off, you need a schedule. But when you reboot, the schedule is not remembered. There is no way to override if you want it off at certain times too.
Thank you very much for your suggestion. Your suggestion has been communicated to the developer and the development project manager is reviewing the content. After reviewing your suggestions, we will apply them to the official version if your proposal matches our concept.
