I agree with this suggestion, and hope that TheraNest will read this and create this feature for us neurodivergent therapists with sensitivity to brightness. Having a dark mode will help significantly reduce eye strain, as others have noted, and it will help with general user experience when managing files.
Im wondering if its possible to add a "dark mode" as we have a visually impaired therapist who relies on dark mode to work however were not able to accomodate them via theranest currently.