diff -r a8300ef1876e -r 284e866f55c7 client/src/HtmlSerializer.js
--- a/client/src/HtmlSerializer.js	Wed Jun 07 18:18:44 2017 +0200
+++ b/client/src/HtmlSerializer.js	Thu Jun 08 11:13:41 2017 +0200
@@ -13,12 +13,6 @@
   annotation: 'span'
 }
 
-const annotationStyle = {
-  textDecoration: 'underline',
-  textDecorationStyle: 'dotted',
-  backgroundColor: 'yellow'
-}
-
 const rules = [
   // Block rules
   {
@@ -57,7 +51,7 @@
         case 'bold': return <strong>{children}</strong>
         case 'italic': return <em>{children}</em>
         case 'underline': return <u>{children}</u>
-        case 'annotation': return <span style={annotationStyle}>{children}</span>
+        case 'annotation': return <span style={{ backgroundColor: object.data.get('color') }}>{children}</span>
         default: return;
       }
     }