Angular 6 Material - Hues and How to change the color of mat radio button

Question

How can I change the color of the using CSS?

Saw on another post that if I use the following code, it would change it, but I had no luck with it so far.

Answer 1

None of the above worked for me. But this one worked i.e put color="primary" on mat -radio button. ie

Active. 

See example below

https://stackblitz.com/edit/angular-material2-issue-ethbcx