It's red. The color of passion.
Hey, no known issues!
This sounds like a design nightmare. You can never know the number of plugins a user might have installed on their browser. That menu list can be 20 items long.
I think it's should be contextual -- all app-related controls are at the top. If there's an overlap with default system controls (e.g. Save Image As...), there should be a way to override it and put it to the top with other app-related controls.