Extension Warehouse: "Installed" indicator please!

I want something on the Extension Warehouse page to indicate to me if I already have the one iI’m looking at nstalled. It currently does not seem to do so.

Example screenshot, Material Tools by ThomThom, Warehouse window next to Manager window

Maybe greyed out Install button? maybe it says Reinstall? not sure exactly what should be there, but something to remind me that I already have this one

Yes, I think “Update” or “Up to Date” if you have the current version instead of “Install” on the ones you have would be great.