Added default receipt titles / colors

app/src/main/java/eu/faircode/email/TupleKeyword.java

@@ -119,6 +119,14 @@ public class TupleKeyword {
                 return context.getString(R.string.title_keyword_label4);
             case "$label5": // Later
                 return context.getString(R.string.title_keyword_label5);
+            case MessageHelper.FLAG_DISPLAYED:
+                return context.getString(R.string.title_keyword_displayed);
+            case MessageHelper.FLAG_DELIVERED:
+                return context.getString(R.string.title_keyword_delivered);
+            case MessageHelper.FLAG_NOT_DISPLAYED:
+                return context.getString(R.string.title_keyword_not_displayed);
+            case MessageHelper.FLAG_NOT_DELIVERED:
+                return context.getString(R.string.title_keyword_not_delivered);
             default:
                 return keyword;
         }
@@ -136,6 +144,14 @@ public class TupleKeyword {
                 return Color.parseColor("#3333FF");
             case "$label5": // Later
                 return Color.parseColor("#993399");
+
+            case MessageHelper.FLAG_DISPLAYED:
+            case MessageHelper.FLAG_DELIVERED:
+                return Helper.resolveColor(context, R.attr.colorVerified);
+            case MessageHelper.FLAG_NOT_DISPLAYED:
+            case MessageHelper.FLAG_NOT_DELIVERED:
+                return Helper.resolveColor(context, androidx.appcompat.R.attr.colorError);
+
             default:
                 return null;
         }

app/src/main/res/values/colors.xml

@@ -17,7 +17,7 @@
     <color name="colorHighlightLight">#7fffe000</color>
     <color name="colorHighlightDark">#7fffe000</color>
 
-    <color name="colorVerifiedLight">#ff00e000</color>
+    <color name="colorVerifiedLight">#ff00c000</color>
     <color name="colorVerifiedDark">#ff00ff00</color>
 
     <color name="colorEncryptLight">#ff00ff00</color>

app/src/main/res/values/strings.xml

@@ -2408,6 +2408,11 @@
     <string name="title_keyword_label4">To do</string>
     <string name="title_keyword_label5">Later</string>
 
+    <string name="title_keyword_displayed">Displayed</string>
+    <string name="title_keyword_delivered">Delivered</string>
+    <string name="title_keyword_not_displayed">Not displayed</string>
+    <string name="title_keyword_not_delivered">Not delivered</string>
+
     <plurals name="title_accessibility_messages">
         <item quantity="one">%1$d message</item>
         <item quantity="other">%1$d messages</item>