I haven't worked on it at all, oops.

Also, I have a question about this.
What is wrong with having a large amount of colors? I see pixel artists try to cut down on, or use the least amount of colors possible in their work. Why is it a bad thing? Is it because preference, does it cause it to be blurry, ..? Is there a time when it's okay to go crazy on colors?
I don't mean for this to be hateful, I'm just wondering.