Yeah! You have to walk up 203 stairs though. It's only like 3€ to go up and is totally worth it. I thought it was way better than the top of Eiffel tower.
Everything is so small from the top of the Eifell tower, it's super crowded, and, most importantly, you can't see the Eiffel tower when you're standing on top of it.
When we visited we did the arc de triumph and it was really cool for that very reason. We only saw the tower from the trocadero instead of going up it.
The previous blue was chosen based on how it appear on TV. The old blue (the one on the photo) appeared too dark.
They put the blue back to how it was originally. I think there is a Wikipedia page about it it's super fun to see how French flag change totally in the decade after La Révolution.