amp

The list of AMP Caches is available at https://cdn.ampproject.org/caches.json

This could be pulled in dynamically rather than hard-coding each AMP Cache in \AMP_HTTP::get_amp_cache_hosts():

https://github.com/ampproject/amp-wp/blob/9e049f6554b69e06284ead57d13ef416226a51ec/includes/class-amp-http.php#L191-L239

This is low priority because the list of caches changes infrequently.

Describe the bug
When a user chooses a background color or image on gutenberg the default color for the font is white. I would like for this functionality to be a bit smarter so if I was to pick white background overlay then the default font color is a dark color other than the white along with the pre registered background colors that make sense;

To Reproduce
Steps to reproduce the b

Task Description

This is a follow-up to #7227 / #7627 but for text sets.

current should be set to null
selection should be an empty array
`

When optimizer used in conjuction together with optimizer-express it's not possible to pass params to optimizer's transformHtml method, only configuration to the optimizer constructor.

And while some transformers honor those configurations:
https://github.com/ampproject/amp-toolbox/blob/efe5775c5ff93ebacd6f7bd336ba02d829eca579/packages/optimizer/lib/transformers/AmpBoilerplateTransformer.js#

Description:

This plugin allows customizing WooCommerce checkout page - https://woocommerce.com/products/klarna-checkout/
Based on the information from the client:

Klarna is one of the biggest payment systems for the Nordic countries and Europe overall. They are also becoming a big player in us. They simplify payment for customers and admin for shops.

https://www.klarna.com/inter