It's 2022 and most apps have Dark Mode nowadays. It might be a bit weird to use Strava when not working out... But looking at the segments the night before to plan out the next run is a thing. Please make us literally lose less sleep when doing this, or when recording an activity in the evening.
This has consistently been the top request on reddit.com/r/strava
Reposted from features chat board to request board
Update from Strava:
Dark Mode has been implemented. Visit this link for more information