Yeah I think it’s normal. Maybe depends on the water that it gets darker. I had one darker then sold it got back into cats and had 2 white and black.All of the striped raphael I've ever seen were a yellowish and brownish color, I've never seen one that was pitch black and bright white. I'll post a pic of him tonight. I only posted it because I was worried since I'd never seen one that was as black and as white as mine.