diff --git a/AcademicMarkdown.tmLanguage b/AcademicMarkdown.tmLanguage
index 8ed6e39..97b1235 100755
--- a/AcademicMarkdown.tmLanguage
+++ b/AcademicMarkdown.tmLanguage
@@ -384,7 +384,7 @@
 			<key>comment</key>
 			<string>Editorial Substitution</string>
 			<key>match</key>
-			<string>\{~~(.*?)~~\}</string>
+			<string>\{\~\~(.*?)\~\~\}</string>
 			<key>name</key>
 			<string>criticmarkup.substitution</string>
 		</dict>
@@ -411,7 +411,7 @@
 			<key>highlight</key>
 			<string>Editorial Highlight</string>
 			<key>match</key>
-			<string>\{\{(.*?)[ \t]*(\[(.*?)\])?[ \t]*\}\}</string>
+			<string>\{==(.*?)[ \t]*(\[(.*?)\])?[ \t]*==\}</string>			
 			<key>name</key>
 			<string>criticmarkup.highlight</string>
 		</dict>
diff --git a/AcademicMarkdownEditor.tmTheme b/AcademicMarkdownEditor.tmTheme
index 5fb6edf..61e1a39 100755
--- a/AcademicMarkdownEditor.tmTheme
+++ b/AcademicMarkdownEditor.tmTheme
@@ -982,7 +982,19 @@
 
         <!-- Below definitions belong to thirdparty plugins. -->
         <!-- critimarkdown addition-->
-
+        <dict>
+            <key>name</key>
+            <string>Addition</string>
+            <key>scope</key>
+            <string>criticmarkup.substitution</string>
+            <key>settings</key>
+            <dict>
+                <key>fontStyle</key>
+                <string></string>
+                <key>foreground</key>
+                <string>#cacd13</string>
+            </dict>
+        </dict>
         <dict>
             <key>name</key>
             <string>Addition</string>