Error/Validation messages don't appear in red in bootstrap-4. Using CSS did not resolve issue.

[jpuvogel13]

Describe the bug
The error/validation messages only appear in black when using bootstrap-4 framework. Also, they don't appear after being touched, like they do in Material. I tried to override CSS properties, but unable to do so without turning description text red as well.
which template:

• MaterialDesignFrameworkModule — Material Design
• Bootstrap3FrameworkModule — Bootstrap 3
• [X ] Bootstrap4FrameworkModule — Bootstrap 4
• NoFrameworkModule — plain HTML
• Other (please specify below)

A clear and concise description of what the bug is.

To Reproduce
Steps to reproduce the behavior:

1. Use bootstrap-4 framework, have required field in form.
2. Touch required field, no message appears. Type a few characters then erase all, error message appears but in black only.
3. ovverride Css class like so: ::ng-deep form-group schema-form-text has-error{
   p{
   color: red;
   }
   this now turns error messages red, however now description of input field is also red too.

Expected behavior
I expect error messages to appear in red font, and once the field is touched.

Screenshots

Desktop (please complete the following information):

• OS: [e.g. iOS]
• Windows
• Browser [e.g. chrome, safari]
• Chrome