Mute the tag colors

src/iridium-note-row.ui

@@ -19,6 +19,7 @@
         </child>
         <child>
           <object class="GtkBox" id="tags">
+            <property name="name">tags</property>
             <property name="visible">True</property>
             <property name="halign">GTK_ALIGN_START</property>
           </object>

src/iridium.css

@@ -18,3 +18,7 @@ GtkPaned#main-pane {
 .list-box > IridiumNoteRow:not(:last-child) {
   border-bottom: 1px solid #ccc;
 }
+
+GtkBox#tags GtkLabel {
+  color: #aaa;
+}