<li>GH-436: Use colors from the selected <code>colorscheme</code> for tools, e.g. the file browser:<ul>
<li>Use the <code>directory</code> color for folders in the file browser.</li>
<li>Use slightly darker version of the <code>background</code> color for the window title bar.</li>
<li>Add an option to turn off file icons in the file browser and in the buffer list in case the <code>colorscheme</code> does not play well with them, cf. GH-479.</li>