diff --git a/main.css b/main.css
index 54688c4..11401e3 100644
--- a/main.css
+++ b/main.css
@@ -25,11 +25,15 @@ h2 {
 
 summary {
     list-style-type: none;
-    list-style-image: url(sitewide_assets/power-16x18.png)
+    list-style-image: url(sitewide_assets/power_red.png);
     cursor: pointer;
     
 }
 
+details[open] summary {
+    list-style-image: url(sitewide_assets/power_green.png);
+}
+
 .title {
   border-bottom: none;
   cursor: inherit;
diff --git a/sitewide_assets/power.png b/sitewide_assets/power.png
deleted file mode 100644
index 5552a13..0000000
Binary files a/sitewide_assets/power.png and /dev/null differ
diff --git a/sitewide_assets/power_green.png b/sitewide_assets/power_green.png
new file mode 100644
index 0000000..c968e5d
Binary files /dev/null and b/sitewide_assets/power_green.png differ
diff --git a/sitewide_assets/power_red.png b/sitewide_assets/power_red.png
new file mode 100644
index 0000000..3bc4bcf
Binary files /dev/null and b/sitewide_assets/power_red.png differ