I don't know if I'm overreacting or not but my Betta fish started to have some brown discoloration on the top of his head a while back. Then it grew to his whole head. So I changed the tank to a 2.5 gallon filtered tank with a light. The discoloration is slowly ebbing away but now his lips are white! Not only that but both of his eyes are completely black when they weren't before! Also, it looks like his right fin in turning while as well, though I couldn't get a good picture.
Below are what good pictures I could get.
Please let me know if something is or isn't wrong or if you need more information!