diff --git a/res/themes/dharma/css/_dharma.scss b/res/themes/dharma/css/_dharma.scss
index 9055d439e6..dac6f45e65 100644
--- a/res/themes/dharma/css/_dharma.scss
+++ b/res/themes/dharma/css/_dharma.scss
@@ -28,6 +28,8 @@ $focus-brightness: 125%;
 
 // red warning colour
 $warning-color: #ff0064;
+// background colour for warnings
+$warning-bg-color: #DF2A8B;
 $mention-user-pill-bg-color: #ff0064;
 $other-user-pill-bg-color: rgba(0, 0, 0, 0.1);