The current theme of The Shelf is the icon style with badges over the top right corner and the orange tinting. I have many more ideas for layouts to allow users to customise the appearance of The Shelf. For example, full width, short cells1, or big square cells with the titles within the cells, etc.
I also plan to add different tint colours that will propagate across the whole UI, as the orange tint does today.
I also plan to have a dynamic icon that will represent that current theme and tint colour, as the initial icon does matching the badged icon UI and orange colour.