Some cosmetics for service package

web/app/templates/services/_nav_content.html.j2

 <ul class="tabs tabs-transparent">
-  <li class="tab disabled"><i class="material-icons left">explore</i>Roadmap</li>
+  <li class="tab disabled"><i class="material-icons left" style="line-height: 48px;">explore</i>Roadmap</li>
   <li class="tab"><a{%if request.path == url_for('services.service', service='file-setup') %} class="active"{% endif %} href="{{ url_for('services.service', service='file-setup') }}" target="_self">File setup</a></li>
   <li class="tab disabled"><i class="material-icons">navigate_next</i></li>
   <li class="tab"><a{%if request.path == url_for('services.service', service='ocr') %} class="active"{% endif %} href="{{ url_for('services.service', service='ocr') }}" target="_self">OCR</a></li>

web/app/templates/services/corpus_analysis.html.j2

 {% extends "nopaque.html.j2" %}
 {% from '_constants.html.j2' import COLORS %}
 
-{% set scheme_color = COLORS.corpus_analysis %}
+{% set scheme_color = COLORS.corpus_analysis_darken %}
 
 {% block nav_content %}
 {% include 'services/_nav_content.html.j2' %}
@@ -56,7 +56,7 @@
           <ul class="pagination paginationBottom"></ul>
         </div>
         <div class="card-action right-align">
-          <a class="btn corpus-analysis-color darken waves-effect waves-light" href="{{ url_for('corpora.add_corpus') }}">New corpus<i class="material-icons right">add</i></a>
+          <a class="btn waves-effect waves-light" href="{{ url_for('corpora.add_corpus') }}">New corpus<i class="material-icons right">add</i></a>
         </div>
       </div>
     </div>
@@ -97,7 +97,7 @@
           <ul class="pagination paginationBottom"></ul>
         </div>
         <div class="card-action right-align">
-          <a class="btn corpus-analysis-color darken waves-effect waves-light" href="{{ url_for('corpora.add_query_result') }}">Add query result<i class="material-icons right">file_upload</i></a>
+          <a class="btn waves-effect waves-light" href="{{ url_for('corpora.add_query_result') }}">Add query result<i class="material-icons right">file_upload</i></a>
         </div>
       </div>
     </div>