Hi William. We are always listening to your feedback and analyzing how often the properties are used so that we can define which ones we should bring to low-code. Having said that, we didn't implement these properties directly in Styles Editor, but, I’ll mark this idea as implemented because today, we released the new Theme Editor in Service Studio Beta. This new feature has a lot of properties that allow you to quickly change the style of your apps, such as gradient backgrounds, spacing, border styles, and many others.

The new Theme Editor allows you to create unique applications, styled according to your own preferences or your brand’s style, without any CSS, directly inside Service Studio.
We hope you like it!
As always, keep sending feedback and ideas.