Give each email block its own background colour
Merchants can now set a background colour on each email block, to make on-brand coloured sections.

Merchants can make on-brand coloured sections, such as a beige hero, a pink product row and a green review. Before, only the whole email and the layout, text, image, button, divider and spacer blocks could have a colour. Brands asked for this through their CSMs.
- Background color on header, hero, copy, product, review, benefits, social, footer, image and video blocks.
- The setting is at the bottom of the block's settings, with a reset button.
- The colour fills the full block, and coloured blocks touch with no white line.
- Works in smart rules and in the universal header and footer.
- The preview matches the sent email.