Take care of your eyes day and night using dark theme for Salesforce tools and services.

Switch the white background of Service Cloud Lightning to dark to work nicely in low-light environments. Prevent dry and itchy eyes, and preserve your vision. 

DARK MODE FOR SERVICE CLOUD LIGHTNING 
No need to adjust org settings or ask your Salesforce Admin to do so. You can easily switch from and black to a light theme. You can also tweak contrast and brightness levels in advanced settings.

NIGHT SHIFT
When staring at a computer screen, we get affected by the harsh blue light it emits. The cold undertone of the screen is proven to harm our sleep and vision. The Night Shift feature decreases your exposure to blue light, making it soft and warm. 

You can turn the Night Shifts on and off when you need to."