## Feature Description Use dominant color as background color in media modal for preview thumbnail. <img width="1203" alt="Screenshot 2022-06-02 at 16 59 53" src="https://user-images.githubusercontent.com/237508/171674005-4ad62af5-1115-4500-971d-d695e45b0f69.png"> Follow on from https://github.com/WordPress/performance/issues/19 https://github.com/WordPress/performance/pull/282
