This item is only available on macOS Mojave (10.14) and will match the macOS preference for Dark Mode. Additionally, the macOS "accent colour" will be used for various UI elements in Flume (eg. buttons, drop-down lists).
The user interface will use a darker background, with lighter text.
The user interface will use a lighter background, with darker text.
The font size preference can also be adjusted at any time in Flume via the keyboard shortcuts⌘+ and ⌘-.