I have noticed that some fields that are set to type 'url' or 'image_picker' for example, do not seem to support the 'default' option that is available for some other fields (i.e. type 'text', etc). I am reading through the documentation here: https://help.shopify.com/themes/development/theme-editor/settings-schema - is this something that can be requested by Shopify developers or is there perhaps other documentation available?
I am wondering if you found a solution for the "default" attribute of the image_picker type?
I'm trying to set up a side-bar section with 20 colors and use multiple instances/copies of this section, "default" image link option would be very useful.