diff --git a/src/less/main.less b/src/less/main.less
index 656eba3..f9aa6ed 100644
--- a/src/less/main.less
+++ b/src/less/main.less
@@ -35,6 +35,7 @@ body.call {
   background-size: 200px;
   background-position: 50% 50%;
   background-repeat: no-repeat;
+  background-blend-mode: soft-light;
 }
 
 #github-ribbon {