Angular 2 Material 前景

我在 angular 2 Material 中改变前景的颜色有困难。例如在工具栏中，文本是黑色的。我试图用以下样式改变它

@import '~@angular/material/theming';

$primary: mat-palette($mat-cyan, 300);
$accent : mat-palette($mat-yellow, 500);;
$warn : mat-palette($mat-red, 600);

$theme-foreground: (
  base:              gray,
  divider:           $white-12-opacity,
  dividers:          $white-12-opacity,
  disabled:          rgba(200, 200, 200, 0.38),
  disabled-button:   rgba(200, 200, 200, 0.38),
  disabled-text:     rgba(200, 200, 200, 0.38),
  hint-text:         rgba(200, 200, 200, 0.38),
  secondary-text:    rgba(200, 200, 200, 0.54),
  icon:              rgba(200, 200, 200, 0.54),
  icons:             rgba(200, 200 , 200, 0.54),
  text:              rgba(200, 200, 200, 0.87),
  slider-min:        rgba(200, 200, 200, 0.87),
  slider-off:        rgba(200, 200, 200, 0.26),
  slider-off-active: rgba(200, 200, 200, 0.38),
);

$theme-background: (
  status-bar: map_get($mat-grey, 300),
  app-bar:    map_get($mat-grey, 100),
  background: map_get($mat-grey, 50),
  hover:      rgba(200, 200, 200, 0.04), // TODO(kara): check style with Material Design UX
  card:       white,
  dialog:     white,
  disabled-button: $black-12-opacity,
  raised-button: white,
  focused-button: $black-6-opacity,
  selected-button: map_get($mat-grey, 300),
  selected-disabled-button: map_get($mat-grey, 400),
  disabled-button-toggle: map_get($mat-grey, 200),
  unselected-chip: map_get($mat-grey, 300),
);

$theme: (
    primary: $primary,
    accent: $accent,
    warn: $warn,
    is-dark: true,
    foreground: $theme-foreground,
    background: $theme-background
  );

@include mat-core();

@include angular-material-theme($theme);

主色和强调色发生了变化，但前端没有变化。
我该如何解决？

我也尝试设置工具栏主题，但没有任何区别。

最佳答案

尝试定义您自己的主题，您还可以定义前景色，如下所述:

How can I use custom theme palettes in Angular?

关于Angular 2 Material 前景，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/45382529/