Remember the selected theme

packages/bridge-ui/src/app/app.component.ts

@@ -19,6 +19,11 @@ export class AppComponent {
   constructor (private themeService: ThemeService) {}
 
   ngOnInit() {
+    const style = localStorage.getItem('style');
+      if(style != undefined) {
+        this.themeService.setTheme(style);
+      } else {
         this.themeService.setTheme(this.defaultTheme);
       }
   }
+}

packages/bridge-ui/src/app/services/theme.service.ts

@@ -13,7 +13,8 @@ export class ThemeService {
 
   constructor(
     private httpClient: HttpClient,
-    private styleManagerService: StyleManagerService) { }
+    private styleManagerService: StyleManagerService) {
+    }
 
   getThemeOptions(): Observable<Array<ThemeOption>> {
     return this.httpClient.get<Array<ThemeOption>>("assets/theme-options.json");
@@ -24,5 +25,6 @@ export class ThemeService {
       "theme",
       `${selectedTheme}.css`
     )
+    localStorage.setItem('style', selectedTheme);
   }
 }