diff --git a/ts/domtools.classes.thememanager.ts b/ts/domtools.classes.thememanager.ts
index 0935ff5..7be89bc 100644
--- a/ts/domtools.classes.thememanager.ts
+++ b/ts/domtools.classes.thememanager.ts
@@ -21,15 +21,24 @@ export class ThemeManager {
     }
   }
 
-  public goBright() {
+  private async updateAllConnectedElements() {
     this.domtoolsRef.elementInstrumenter.forEachelement(async elementArg => {
-      await this.setThemeStatusForElement(elementArg, true);
+      await this.setThemeStatusForElement(elementArg, this.goBrightBoolean);
     });
   }
 
+  public goBright() {
+    this.goBrightBoolean = true;
+    this.updateAllConnectedElements();
+  }
+
   public goDark() {
-    this.domtoolsRef.elementInstrumenter.forEachelement(async elementArg => {
-      await this.setThemeStatusForElement(elementArg, false);
-    });
+    this.goBrightBoolean = false;
+    this.updateAllConnectedElements();
+  }
+
+  public toggleDarkBright() {
+    this.goBrightBoolean = !this.goBrightBoolean;
+    this.updateAllConnectedElements();
   }
 }
\ No newline at end of file