Curious question (not a health concern question). I'm a first time betta owner. Is it normal for their color and pattern to change?? I got George Jan 31st and he was quite healthy from what I could see. Mostly white fins with blue/turqouise body. He is now almost completely blue with hues of turqouise and only the white on edges of fins. His food has color enhancement in it, but I find it hard to believe it would cause the white to change to blue. How common of this type of change?? (Pics attached assuming I did it right)