Actually they are quite different but are often compared or mixed up, you are right on the color wise, but scene is based off of fashion and 2000s/2010s trends, emo also had to do with trends but also leans more towards music. Some differences you'll see is that emo is more focused on certain types of music like punk, rock, or hardcore music, idk how to explain scene that much so I'd probs look more into it if you wanna know the difference TvT (also sorry if this is hard to read, I am kinda typing fast)