Yes — Fieldsity has a light and a dark theme, and you can switch any time.
Switch light and dark mode
Click the moon (or sun) icon in the top bar, to the left of your profile picture. Fieldsity flips between light and dark instantly, and remembers your choice for next time.
Tip: Working outdoors in bright sun? Light mode is easier to read on a phone screen. In a dim office or truck cab, dark mode is easier on the eyes.
Related: Update your personal profile.