diff --git a/celery_progress/static/celery_progress/celery_progress.js b/celery_progress/static/celery_progress/celery_progress.js
index 0a93845..0d957db 100644
--- a/celery_progress/static/celery_progress/celery_progress.js
+++ b/celery_progress/static/celery_progress/celery_progress.js
@@ -22,13 +22,7 @@ class CeleryProgressBar {
         this.onHttpError = options.onHttpError || this.onError;
         this.pollInterval = options.pollInterval || 500;
         // Other options
-        let barColorsDefault = {
-            success: '#76ce60',
-            error: '#dc4f63',
-            progress: '#68a9ef',
-            ignored: '#7a7a7a'
-        }
-        this.barColors = Object.assign({}, barColorsDefault, options.barColors);
+        this.barColors = Object.assign({}, this.getBarColorsDefault(), options.barColors);
 
         let defaultMessages = {
             waiting: 'Waiting for task to start...',
@@ -169,6 +163,15 @@ class CeleryProgressBar {
             this.onHttpError(this.progressBarElement, this.progressBarMessageElement, "HTTP Code " + response.status, response);
         }
     }
+    
+    static getBarColorsDefault() {
+        return {
+            success: '#76ce60',
+            error: '#dc4f63',
+            progress: '#68a9ef',
+            ignored: '#7a7a7a'
+        };
+    }
 
     static initProgressBar(progressUrl, options) {
         const bar = new this(progressUrl, options);