terminal: always call update_colors on set_config

src/terminal.rs

@@ -572,11 +572,14 @@ impl Terminal {
                 }
             }
             if changed {
-                self.update_colors(config);
                 update = true;
             }
         }
 
+        //TODO: this is done on every set_config because the changed boolean above does not capture
+        // WINDOW_BG changes
+        self.update_colors(config);
+
         if update_cell_size {
             self.update_cell_size();
         } else if update {