diff -r 964438ef8401 -r a4705c2b4544 client/src/HtmlSerializer.js
--- a/client/src/HtmlSerializer.js	Mon Oct 01 00:17:45 2018 +0200
+++ b/client/src/HtmlSerializer.js	Mon Oct 08 03:24:47 2018 +0200
@@ -35,7 +35,7 @@
           return <ol>{children}</ol>;
         case 'bulleted-list':
           return <ul>{children}</ul>;
-         case 'list-item':
+        case 'list-item':
           return <li>{children}</li>;
         case 'paragraph':
         case 'line':
@@ -65,7 +65,7 @@
         case 'underlined':
           return <ins>{children}</ins>
         case 'category':
-          return <span style={{ backgroundColor: obj.data.get('color') }}>{children}</span>
+          return <span style={{ backgroundColor: obj.get('color') }}>{children}</span>
         default: return;
       }
     }