Enable f.lux before windows login?



  • Hi,

    I'm on polyphasic schedule so I need to use lowest value of f.lux when I getup at midnight. However, it doesn't work after I finished the Windows login and it's not good for me.
    Is it possible to activate f.lux (or even Night Light or you know any app can do that) before Windows login?

    Currently I have to switch to Windows Night Light because it stars faster than f.lux but I still have to use my eyes to input the login credential.

    Thanks.