Many Chrome and Firefox extensions have glyphs/buttons that look quite ugly in Orion's toolbar. Orion's programmable buttons have a fantastic glyph selector tool and it would be great if this could also be used to allow us to replace an extension's default glyph with one of our own choosing.
When right clicking an extension, add a "Custom Icon" or similarly named menu item which opens up the glyph selection tool.
Mac users are often people who like a UI to look good and shy away from UIs that aren't "Mac-like". While we can't improve the often hideous popups of most extensions (wtf Dark Reader!!!), they're only visible when you click on them. Their icons are visible all the time though and I reckon adding this small cosmetic feature would help make Orion's UI look and feel even more attractive.