docs-bug(COMPONENT): mat-chip color not working

### Documentation Feedback

mat-chip color is not being set.

In the Icons chips avatar example one mat-chip color is set to primary and the other is set to accent yet they are all grey in the example

### Affected documentation page

https://material.angular.io/components/chips/overview#icons

Open the affected documentation page and inspect the Icons chips avatar example, focusing on the mat-chip elements assigned primary and accent colors. Confirm the example renders those colors instead of grey, and verify the corrected example in the documentation preview.

Written by the indexing model from the issue text.