Support different colors for different kinds of publications in publication list (alshedivat#797)

Author: gzwongkk

_data/venues.yml

@@ -0,0 +1,6 @@
+"AJP":
+  url: https://aapt.scitation.org/journal/ajp
+  color: "#00369f"
+
+"PhysRev":
+  url: https://journals.aps.org/

_layouts/bib.html

@@ -11,9 +11,13 @@
           {%- endif -%}
         {%- elsif entry.abbr -%}
           {%- if site.data.venues[entry.abbr] -%}
-          <abbr class="badge"><a href="{{site.data.venues[entry.abbr].url}}">{{entry.abbr}}</a></abbr>
+            {%- assign venue_style = nil -%}
+            {%- if site.data.venues[entry.abbr].color != blank -%}
+              {%- assign venue_style = site.data.venues[entry.abbr].color | prepend: 'style="background-color:' | append: '"' -%}
+            {%- endif -%}
+            <abbr class="badge" {% if venue_style %}{{venue_style}}{% endif %}><a href="{{site.data.venues[entry.abbr].url}}">{{entry.abbr}}</a></abbr>
           {%- else -%}
-          <abbr class="badge">{{entry.abbr}}</abbr>
+            <abbr class="badge">{{entry.abbr}}</abbr>
           {%- endif -%}
         {%- endif -%}
         </div>