slight style improvements for the publication section (#69)

_sass/_base.scss

@@ -235,12 +235,14 @@ p {
 
     .publication-title {
         font-size: 16px;
-        font-weight: 500;
+        font-weight: 400;
+        color: $text-color;
         margin-bottom: 1px;
     }
     .publication-authors {
-      font-style: italic;
-      margin-bottom: 1px;
+        font-style: italic;
+        color: $text-grey;
+        margin-bottom: 1px;
     }
     .publications-section {
         .intro {