diff --git a/test/test.browser.ts b/test/test.browser.ts
index 6e92a0a..a0c855a 100644
--- a/test/test.browser.ts
+++ b/test/test.browser.ts
@@ -8,7 +8,7 @@ tap.test('should create a static element', async () => {
     public static styles = [
       deesElement.css`
       .buttonClass {
-        background: ${deesElement.cssManager.dbTheme('blue', 'black')};
+        background: ${deesElement.cssManager.bdTheme('blue', 'black')};
       }
     `
     ];
diff --git a/ts/dees-element.classes.cssmanager.ts b/ts/dees-element.classes.cssmanager.ts
index 87bf28c..0c5d22d 100644
--- a/ts/dees-element.classes.cssmanager.ts
+++ b/ts/dees-element.classes.cssmanager.ts
@@ -2,30 +2,50 @@ import { CSSResult } from 'lit-element';
 import * as plugins from './dees-element.plugins';
 import * as domtools from '@designestate/dees-domtools';
 
-export interface IDbVarTriplet {
+export interface IBdVarTriplet {
   cssVarName: string;
   darkValue: string;
   brightValue: string;
 }
 
 export class CssManager {
-  public dbVarTripletStore: IDbVarTriplet[] = [];
+  public domtoolsPromise = domtools.DomTools.setupDomTools();
+  public goBright: boolean = false;
+  public bdVarTripletStore: IBdVarTriplet[] = [];
 
-  public dbTheme(brightValueArg: string, darkValueArg: string): CSSResult {
+  constructor() {
+    this.domtoolsPromise.then(async (domtoolsArg) => {
+      domtoolsArg.themeManager.themeObservable.subscribe(async (goBrightArg) => {
+        this.goBright = goBrightArg;
+        await domtoolsArg.domReady;
+        for (const bdTripletArg of this.bdVarTripletStore) {
+          document.body.style.setProperty(
+            bdTripletArg.cssVarName,
+            this.goBright ? bdTripletArg.brightValue : bdTripletArg.darkValue
+          );
+        }
+      });
+    });
+  }
+
+  public bdTheme(brightValueArg: string, darkValueArg: string): CSSResult {
     let returnCssVar: string;
-    const existingTriplet = this.dbVarTripletStore.find(tripletArg => tripletArg.darkValue === darkValueArg && tripletArg.brightValue === brightValueArg);
+    const existingTriplet = this.bdVarTripletStore.find(
+      (tripletArg) =>
+        tripletArg.darkValue === darkValueArg && tripletArg.brightValue === brightValueArg
+    );
     if (existingTriplet) {
       returnCssVar = existingTriplet.cssVarName;
     } else {
-      const newTriplet: IDbVarTriplet = {
+      const newTriplet: IBdVarTriplet = {
         cssVarName: `--${plugins.isounique.uni()}`,
         brightValue: brightValueArg,
-        darkValue: darkValueArg
+        darkValue: darkValueArg,
       };
-      this.dbVarTripletStore.push(newTriplet);
-      domtools.DomTools.setupDomTools().then(async (domtools) => {
-        await domtools.domReady.promise;
-        document.body.style.setProperty(newTriplet.cssVarName, newTriplet.darkValue);
+      this.bdVarTripletStore.push(newTriplet);
+      this.domtoolsPromise.then(async (domtoolsArg) => {
+        await domtoolsArg.domReady.promise;
+        document.body.style.setProperty(newTriplet.cssVarName, this.goBright ? newTriplet.brightValue : newTriplet.darkValue);
       });
       returnCssVar = newTriplet.cssVarName;
     }
@@ -41,4 +61,4 @@ export class CssManager {
     }
     return plugins.litElement.unsafeCSS(returnString);
   };
-}
\ No newline at end of file
+}