I'm a huge fan of Daft Punk. They're the one band that's still on my "must see live" list. And if/when they do tour again, I hope the stage has the same retro feel as their Grammy set.
I was nerding out a bit and found the set maker's blog, which had some great close ups of Daft Punks booth. The interior looks like a '70s living room with wood paneling and large rocks on the walls, electronics set in the wall and gigantic speakers hung from the wall.
With something that dropped out of a spaceship to make music.
The gold mirror look is very '70s though.
And the future of retro almost always has some neon.