@@ -38,6 +38,8 @@
  		<script type="text/javascript">
 			/**
 			 * Perform an AJAX query to get the current theme style sheet.
+			 * 
+			 * @since 2.9.0 Function is modified to use JSON with the REST API.
 			 */
 			function ajaxGetTheme () {
 				$.ajax(
@@ -51,10 +53,18 @@ function ajaxGetTheme () {
 							path: '../css/styles.css' 
 						}, 
 						success: function (data) {
-							if (data.match(/styles.css$/g)) 
-								$('style').text( "@import url(../" + data.trim() + ");" );
+							if ("error" in data)
+								return;
+							const path = data["theme_path"].trim();
+							if (path.endsWith("styles.css")) {
+								$('style').html(
+									"@import url(../" + path + ");"
+								);
+							}
+						},
+						dataType: "json"
 					}
-				});
+				);
 			}
 
 			/**
 
@@ -139,7 +139,9 @@ function get_phonetic_reading($get_req)
 function get_theme_path($get_req)
 {
     chdir('..');
-    return get_file_path($get_req['path']);
+    return json_encode(
+        array("theme_path" => get_file_path($get_req['path']))
+    );
 }
 
 /**
Original file line number	Diff line number	Diff line change
`@@ -139,7 +139,9 @@ function get_phonetic_reading($get_req)`
`139`	`139`	`function get_theme_path($get_req)`
`140`	`140`	`{`
`141`	`141`	`chdir('..');`
`142`		`- return get_file_path($get_req['path']);`
	`142`	`+ return json_encode(`
	`143`	`+ array("theme_path" => get_file_path($get_req['path']))`
	`144`	`+ );`
`143`	`145`	`}`
`144`	`146`
`145`	`147`	`/**`