docs-bug(multiple): are color variants still supported?

[json-derulo]

Documentation Feedback

In v18, there used to be a section in the theming guide about creating custom color variants: https://v18.material.angular.io/guide/theming#using-component-color-variants

In v19, this section is gone. The problem is that in various component's API docs, such as button, there is still a link to this section: https://material.angular.io/components/button/api

So is this approach still supported? If yes, please bring back the section to the theming guide so the links work again. If not, please remove the link and guide to an alternative solution.

Affected documentation page

https://material.angular.io/guide/theming#using-component-color-variants