How to change Angular 5 Material input placeholder? [duplicate]

Answer 1

I am using angular material 8.2.3 and None of the above solutions worked for me and having the following in theme.scss(material theme file) worked for me

.mat-input-element::placeholder{
   color: red;
}

conversely with piercing the following should work in component styles

::ng-deep .mat-input-element::placeholder{
    color: red;
}