make volume bar gray if muted

resources/style.css

@@ -44,6 +44,10 @@ toolbarview#main {
   min-height: 15px;
 }
 
+.mute #volume-scale trough highlight {
+  background-color: oklch(from var(--accent-bg-color) l 0% h);
+}
+
 #play-queue listview {
   background-color: rgba(0,0,0,0);
 }

src/ui/window.rs

@@ -176,7 +176,8 @@ mod imp {
 
             // wipe state directory on init (gets rid of stale mpris cover art)
             let state_home = audrey::globals::xdg_dirs().get_state_home();
-            std::fs::remove_dir_all(state_home).expect("could not remove xdg state home");
+            // silence error (its okay if it does not exist)
+            let _ = std::fs::remove_dir_all(state_home);
 
             if let Some(display) = gdk::Display::default() {
                 gtk::style_context_add_provider_for_display(&display, &self.css_provider, 420);
@@ -476,6 +477,12 @@ mod imp {
 
         fn set_mute(&self, mute: bool) {
             self.mpv.set_property("mute", mute).unwrap();
+
+            if mute {
+                self.obj().add_css_class("mute");
+            } else {
+                self.obj().remove_css_class("mute");
+            }
         }
 
         fn pause(&self) -> bool {