update color

Author: Dhruvi16

themes/vocabulary_theme/templates/blog-post.html

@@ -57,7 +57,7 @@ <h5 class="title">Posts in the {{ series.name }} series</h5>
           <ul class="posts">
             {% for post in series.children.order_by('pub_date') %}
               {% if post.path==this.path %}
-                <li>
+                <li class="has-color-dark-slate-gray">
                   <i class="icon circle-filled"></i>{{ post.title }}
                 </li>
               {% else %}