50+ profile backgrounds makes for a silly dropdown, so it would be nice to convert it into a browser that lets you see small versions of each background in a scrolling grid, with the same style of tooltip to see a bigger version when hovering it.

(The dropdown would have to be replaced by the browser in Extended documents as well)

Additional details:

• Similar base as the icon browser
• 2x2 grid
• Names given to the dropdowns to make them searchable
• Probably reorder them based on general color