I am working on a new user interface

Luis Ángel wrote: I was thinking that Mac users will prefer something more..........Mac(ish). I could add an option into the preferences dialog.

Please do! I personally think the darker tones are easier on the eyes. I used the comic app eHon for the longest time before switching to your app, and besides the cover art display method of eHon the dark UI is what I miss about it.

Another point should be made that a Dark UI = Expensive looking UI.
Just check out what Adobe and Apple have done with all of their pro apps over the last couple years. hahaha

It shouldn't been difficult, maybe in the next release

Yes looks great and nice!!
I like it