diff --git a/_config.butterfly.yml b/_config.butterfly.yml
index 0b92a332..56d8e286 100644
--- a/_config.butterfly.yml
+++ b/_config.butterfly.yml
@@ -525,7 +525,7 @@ tag_ui: # 留空或 index
 background: url(/img/朋克屋顶.jpg)
 
 # Footer Background
-footer_bg:
+footer_bg: color(orange)
 
 # the position of bottom right button/default unit: px (右下角按钮距离底部的距离/默认单位为px)
 rightside-bottom: