Refresh the project a few times until you start seeing both blue in the background AND a different logo. Not inside the project, but the site itself. Ok, this was laggy earlier, but now it's fixed so I think I'm gonna use this for all my future projects now :P
Basically, how it works is that there's hidden code in the costumes for the first two sprites that changes the site's code that tells it how to look. I followed the tutorial @fortyonegames made to do this, check it out: https://scratch.mit.edu/projects/1311303013/ This goes along with what I'm learning in a class I'm in for making websites, and it gives me a bit of inspiration seeing something new I can do on here... I haven't felt like posting recently, but somehow, trying this... makes it feel like there's still more that I can do here. I will post something else soon.