Does the disable menu have an entry there, when Safari is the current app?

The first problem is that sunrise/sunset can vary by several hours from the local timezone - e.g., when traveling to Australia, or even China (which has one timezone for the whole country). We tried to make this automatic in our first version in 2009 and gave it up, because people wanted it to be much closer to actual sunrise/sunset. (The system time widget does not tell us the location of the machine, but only the timezone offset, so macOS/Apple know this but we don't get it automatically.)

f.lux tries to know your location within about 5 miles (rather than exactly for privacy reasons), and it does prompt when your timezone changes - we could work on making it more seamless, but there are privacy implications with making it too quiet.

How did you do that?

Yes, just turn off the f.lux option to change it, and turn it on in System Preferences instead.

Having the same problem on a new version of IOS. Also just wanted to say this app is fucking awesome!

I second this. Is there any possible way to do this? I would be happy to help in development or testing of this feature if someone knows how to do it

We are only telling the macOS to change modes, which I'd assume is like clicking on the system preference.

Have you also reported this to WhatsApp? (because they're more likely to be able to fix it...)

@kushclarke said in enable custom color-modes without relation to actual time (Reader Mode):

Have you got the solution? If so, then please tell me the best way. Check out this guide now.

What about this?

What was the color temperature in f.lux?

You see, I think it was due to the color temperature being so warm and red that it actually made the highlighting become impossible to see due to the color of the highlighting mixed with the color temperature from f.lux. I think that's why you could see the highlighting after sunrise. After all, after sunrise, the color temperature by default goes back to 6500K.

Try this: open a document that has highlighting. Then, open the f.lux window and slowly adjust the color temperature until it gets as warm and as red as you can possibly get it. I think you'll find that as you make the color temperature warmer, the highlighting becomes less and less visible and finally completely invisible.

Thanks @crazydef! That did it for now :)

any idea when this might be fixed? It's pretty annoying having to disable flux twice at different times just to get my screen into full day mode in the morning

This can happen if you use Darkroom mode. If f.lux doesn't fix it for you (it should) you can toggle it in System Preferences > Accessibility >Display >Use Grayscale

Thanks!!