Phosh has a new optional feature that uses the light sensor to switch to a high contrast theme whenever it detects you are in direct sunlight. Very cool, especially since it also applies to the lock screen and all GTK apps too. #Librem5
I should have mentioned how to enable this if you are running Phosh on a Librem 5:
gsettings set sm.puri.phosh automatic-high-contrast true
@jlcrawf @kyle you can adjust the level via gsettings too:
```
gsettings set sm.puri.phosh automatic-high-contrast-threshold <number>
```