Affinity: Add block CSS to the editor so that colors work as expected

[jeffikus]

Steps to replicate

Details of the issue in Automattic/wp-calypso#54990 (comment)

1. Confirm that the issue exists with Affinity as well.
2. Apply the Rebalance fix and see if that solves the issue.

Related Issues:

Automattic/wp-calypso#54990 (comment)
#4756

[danieldudzic]

Hmm, I can't seem to replicate the issue in Affinity 🤔

[mikachan]

I can replicate this, but I can't see which stylesheet the colours are coming from. They're not in blocks.css, they're in the inline global-styles-inline-css. Do these inline styles need to be copied into the editor stylesheet (or maybe just the ones for colours)?

[scruffian]

I believe this will be fixed by WordPress/gutenberg#35514.