Angular 离子原色的动态变化

有没有一种方法可以创建一个单独的主题，例如BlueTheme，在这里我更改$colors primary、secondary、danger等。。激活主题时的变量？或者我必须手动更改应用这些颜色的类别和位置吗？e、 g

.BlueTheme {
//Whenever this theme is activated, I want to change the primary, secondary colors etc
     $colors {
         primary: different color,
         secondary: another color, etc...
     }
}

---

谢谢

以下是我的笔记，供我将来使用

服务

import {Injectable} from '@angular/core';
import {BehaviourSubject} from 'rxjs/Rx';

@Injectable
export class

     SettingsProvider {
      private theme: BehaviorSubject<String>;

      constructor (
        this.theme = new BehaviorSubject('dark-theme');
       }
       setActiveTheme(val) {
         this.theme.next(val)
       }

       getActiveTheme()  {
          return this.theme.asObservable();
       }

}

/theme/custom-theme-light.scss

.light-theme {
   ion-content {
     background-color: fff;
     color:000;
   }
   .header .toolbar-title {
    color: #000;
   }
   .header .tooblar-background {
     border-color: #EFF;
     background-color: #fff;
   }
   .tab-button {
     background-color: #fff;
   }
}

theme/custom-theme-dark.scss

.dark-theme {
   ion-content {
     background-color: #000;
     color: #FFF;
   }
   .header .toolbar-title {
    color: #FFF;
   }
   .header .tooblar-background {
     border-color: #100;
     background-color: #000;
   }
   .tab-button {
     background-color: #000;
   }
}

home.html

内部离子标题>离子标题后的离子导航栏

<ion-buttons end>
  <button ion-button icon-only (click)="toggleAppTheme()">
    <ion-icon name="bulb"></ion-icon>
  </button>
</ion-buttons>

app-component.ts

export class MyApp {
  //after rootPage
  selecteTheme: string

  constructor( ..., private settings: Settings)
    this.settings.getTheme().subscribe(theme => this.selectedTheme = theme);
    // above platform.ready

app.html

<ion-nav [root]="rootPage" [class]="selectedTheme"></ion-nav>

内部html模板

[color]="selectedTheme + '-primary'"

<ion-nav [root]="rootPage" [class]="selectedTheme"></ion-nav>

dark-theme-primary:
light-theme-primary;

[color]="selectedTheme + '-primary'"