Spacer Block: Allow background color choice

[jasmussen]

What problem does this address?

The Spacer block is currently a primary layout tool, there to space out elements on a page. Aspects of this utility are likely to be augmented by, or taken over, by the addition of margin controls to more blocks.

But the spacer can still serve a purpose on its own, by allowing easily editable editorial spacing inside content.

An additional utility could be to allow a background color, so you could create empty colored areas. Many patterns do this already by adding an empty Cover block with a dummy spacer block inside. By enabling colors on the spacer block directly, this would simply that flow.

What is your proposed solution?

Add a color swatch tool to the Spacer toolbar:

[mtias]

I'm not sure this makes much sense, especially if we end up transforming the spacer into adjacent margins in the future.

[jasmussen]

Excellent point. I created this ticket inspired by a personal use case, behold:

Since then I haven't had much use for changing the color, though, which suggests that even if there was a use case for it, it might be better handled through extensibility or other blocks, like the separator.

[sunildevbang]

Hey How can we add custom background color