Whether you prefer the Light mode theme or Dark mode theme, or perhaps both or either depending on the setting you’re working in or the time of day, is entirely a matter of personal preference.

At the very top of the General settings, look for the “Appearance” section and then choose “Light”.

How to Enable the Light Gray Theme on Mac (the Default visual appearance) Even your wallpaper can also change the appearance of Light and Dark appearances, if you have transparency effects enabled on the Mac. There are a few other settings that can impact how the Dark appearance or Light Appearance may look in Mac OS, including disabling transparency effects in Mac OS interface, if you’re using the Increase Contrast setting, and adjusting the highlight color for what is selected on screen. Everything on screen just redraws into either the Dark appearance or the Light appearance, depending on which UI is set by the user.

You can change from Dark theme to Light theme at any time by going to the System Preferences General settings and adjusting from there, and the effect is always immediate without requiring a system reboot or anything of that sort. With many bright grays and bright white visual elements, this has been the default appearance of MacOS for quite some time in one respect or another (Mac OS X has had several distinct visual themes over the years, from aqua to brushed metal to beyond, with the most recently recognizable UI appearance change having arrived in Yosemite as the bright Light theme, and with the Dark theme option arriving in Mojave). Similarly, the Light mode theme is very light.

You’ll also notice that the wallpaper background image changes depending on if you’re using Dark or Light theme, though you can change wallpaper images separately at any time too. Many users really enjoy the appearance of Dark Mode on Mac OS, particularly for those who work at night or in a dimly lit area, or if you just find the bright white Light interface to be distracting or glaring. Gone are the bright whites and light grays that have been the default appearance of MacOS for a while now, as they are basically inverted into blacks and deep dark grays. Much as it sounds, the Dark mode theme is very dark. The visual differences between Dark mode and Light mode are dramatic and very obvious immediately. When finished, close out of System Preferences.At the very top of the General settings, look for the “Appearance” section and then choose “Dark”.Pull down the  Apple menu and choose “System Preferences”.Note that being able to enable Dark Mode in MacOS requires macOS Mojave 10.14 or later, as earlier versions do not support the full Dark visual theme*.

You can easily enable Dark mode theme in MacOS while initially configuring MacOS, or you can switch between Dark mode and Light mode appearance at any time by adjusting the Mac OS system settings.

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