当表单域处于活动状态时，Angular Material 表单域轮廓输入颜色会发生变化

Question

问题陈述：我正在实施 Angular 材料mat-form-field属性。我将表单字段外观作为大纲。我试图在选择输入时更改输入边框的颜色。

预期行为。选择输入时，输入字段轮廓边框颜色应更改。当表单域处于活动状态时，我想将轮廓的颜色更改为黑色。

当前行为：现在，当表单字段处于活动状态时，它会显示角度材料默认原色。

这都是我的依赖

{
  "dependencies": {
    "@angular/animations": "^6.1.9",
    "@angular/cdk": "^6.4.7",
    "@angular/common": "^6.1.0",
    "@angular/compiler": "^6.1.0",
    "@angular/core": "^6.1.0",
    "@angular/forms": "^6.1.0",
    "@angular/http": "^6.1.0",
    "@angular/material": "^6.4.7",
    "@angular/platform-browser": "^6.1.0",
    "@angular/platform-browser-dynamic": "^6.1.0",
    "@angular/router": "^6.1.0",
    "aws-amplify": "^1.1.6",
    "core-js": "^2.5.4",
    "hammerjs": "^2.0.8",
    "rxjs": "~6.2.0",
    "zone.js": "~0.8.26"
  },
  "devDependencies": {
    "@angular-devkit/build-angular": "~0.8.0",
    "@angular/cli": "~6.2.3",
    "@angular/compiler-cli": "^6.1.0",
    "@angular/language-service": "^6.1.0",
    "@types/jasmine": "~2.8.8",
    "@types/jasminewd2": "~2.0.3",
    "@types/node": "~8.9.4",
    "codelyzer": "~4.3.0",
    "jasmine-core": "~2.99.1",
    "jasmine-spec-reporter": "~4.2.1",
    "karma": "~3.0.0",
    "karma-chrome-launcher": "~2.2.0",
    "karma-coverage-istanbul-reporter": "~2.0.1",
    "karma-jasmine": "~1.1.2",
    "karma-jasmine-html-reporter": "^0.2.2",
    "protractor": "~5.4.0",
    "ts-node": "~7.0.0",
    "tslint": "~5.11.0",
    "typescript": "~2.9.2"
  }
}

Answer 1

下面的 CSS 应该允许您覆盖颜色。

/* default and hover color */
::ng-deep .mat-form-field-appearance-outline .mat-form-field-outline {
    color: red;
}

/* focused color */
::ng-deep .mat-form-field-appearance-outline.mat-focused .mat-form-field-outline-thick {
    color: green;
}

/* floating label color */
::ng-deep .mat-form-field-appearance-outline.mat-focused .mat-form-field-label { 
    color: green; 
}