Correctly honour theme foreground colour

Rather than try to explicitly look up the colour, don't specify a colour
at all. Argument names are never nested within a <span> applying a
different foreground colour.

This does have one visible effect: with Adwaita (light), selecting the
treeview row causes method argument names to switch from black to white,
just like the method name. I think this is actually more readable (and
the green used for the signature is illegible against the blue
selected-row highlight.)

As discussed in https://gitlab.gnome.org/GNOME/d-feet/merge_requests/4#note_319094 and !8.

1 files changed, 2 insertions, 18 deletions

diff --git a/src/dfeet/introspection_helper.py b/src/dfeet/introspection_helper.py
index b718c1a..74789f5 100644
--- a/src/dfeet/introspection_helper.py
+++ b/src/dfeet/introspection_helper.py
@@ -1,31 +1,15 @@
 # -*- coding: utf-8 -*-
 
-from gi.repository import GObject, Gio, Gtk
+from gi.repository import GObject, Gio
 from dfeet import dbus_utils
 
-_style_context = None
-_fg_color = "#000000"
-
-
-def fg_color():
-    global _style_context, _fg_color
-    if _style_context is None:
-        _style_context = Gtk.StyleContext()
-        color = _style_context.get_color(Gtk.StateFlags.NORMAL)
-        _fg_color = "#%02x%02x%02x" % (
-            int(color.red) * 255,
-            int(color.green) * 255,
-            int(color.blue) * 255,
-        )
-    return _fg_color
-
 
 def args_signature_markup(arg_signature):
     return '<small><span foreground="#2E8B57">%s</span></small>' % (arg_signature)
 
 
 def args_name_markup(arg_name):
-    return '<small><span foreground="%s">%s</span></small>' % (fg_color(), arg_name)
+    return '<small>%s</small>' % (arg_name,)
 
 
 class DBusNode(GObject.GObject):