On Firefly Pro I can't see a clear divide between the file tabs at the top of the editor. (excluding currently active tab)
![image](https://user-images.githubusercontent.com/36936169/90898098-0c6d4300-e3be-11ea-8684-23efe334c820.png)
Although this doesn't really affect the use of the theme it would be nice if non-active tabs had a little border around them/divide to show the start and end of them.