Can we add a dark mode?
Does it benefit your user?
If you want your site to be in dark mode it’s good practice to have a toggle so the user can switch between light and dark mode.
“While dark mode may present some advantages for some low-vision users — in particular, those with cloudy ocular media such as cataract, the research evidence points in the direction of an advantage of positive polarity for normal-vision users. In other words, in users with normal vision, light mode leads to better performance most of the time.”
Before you jump on the dark mode bandwagon check out these findings from Nielsen Norman Group.