Load a theme into the custom view

[microfortnight]

I started working on a theme in the custom view and saved it using the controls on the bottom.
The next day, I want to resume my work, or tweak a few colors, but the custom view is reset to the defaults.
I can't figure out how to load my theme into the view and don't want to start from scratch 😞
Please consider this as a new feature.

[georgeazeria]

This would be fantastic. I've been able to edit the css file directly, but it's obviously a lot more annoying than if this feature were there.