diff --git a/prototype/frost.webp b/prototype/frost.webp
new file mode 100644
index 0000000..ae414c0
Binary files /dev/null and b/prototype/frost.webp differ
diff --git a/prototype/style.css b/prototype/style.css
index 2a30975..f54b316 100644
--- a/prototype/style.css
+++ b/prototype/style.css
@@ -1,6 +1,6 @@
 /* mint theme
 :root {
-	--glass:             #EEEEEE77;
+	--glass:             url("frost.webp"), #EEEEEE77;
 	--background:        #EEE;
 	--foreground:        #333;
 	--subtle-foreground: #888;
@@ -12,7 +12,7 @@
 
 /* martian theme */
 :root {
-	--glass:             hsla(0, 20%, 7%, 0.5);
+	--glass:             url("frost.webp"), hsla(0, 20%, 7%, 0.5);
 	--background:        hsl(0, 20%, 7%);
 	--foreground:        hsl(0, 25%, 90%);
 	--subtle-foreground: hsl(0, 35%, 55%);