Messages fix

stylesheets/_session_theme.scss

@@ -1,5 +1,14 @@
 // Messages
-.dark-theme {
+
+.discussion-container {
+  @at-root .light-theme #{&} {
+    background-color: $session-color-white;
+  }
+  @at-root .dark-theme #{&} {
+    background-color: $session-shade-2;
+  }
+}
+
 .conversation {
   background: none !important;
 }
@@ -86,7 +95,7 @@
 .inbox {
   background-image: $session-gradient-black;
 }
-}
+
 .conversation {
   background: none !important;
 }