Improved support for dark themes

[a-bentofreire]

Hi,
I'm running BC4 Pro on Linux Mint 18.1 Cinnamon using Mint-Y-Yltra-Dark theme.
There are 2 types of visual elements that aren't visible:
- black icons (e.g. show all) on the toolbar
- the unselected text on the editboxes



P.S. Other Gtk applications don't have the black text on editbox problem

Thanks

[Aaron]

Thanks for the report. We're cataloging various dark theme issues on each OS for research. I'll add these notes to our entry on the subject.

[a-bentofreire]

Thanks, Aaron

BC is the best sync program.
With this dark theme support it will look awesome.