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Changes between Initial Version and Version 1 of Ticket #46597, comment 4

initial	v1
1		At a minimum, I'd expect the `safecss_filter_attr` to include those style properties produced by blocks shipped with core. To this end, I've audited the save implementations of ~~existing blocks~~, and discovered the following properties:
	1	At a minimum, I'd expect the `safecss_filter_attr` to include those style properties produced by blocks shipped with core. To this end, I've audited the save implementations of [https://github.com/WordPress/gutenberg/tree/master/packages/block-library existing blocks], and discovered the following properties:
2	2
3	3	- `background-color` (button, cover, paragraph, pullquote)