So I'm finally planning out my new tail in detail and I came up with this kind of crazy design. I've yet to draw it out, but do you think it sounds good or should I change it to something simpler?

I've always wanted a koi tail but I have this aqua blue neoprin that I really don't want to completely paint over. So I was thinking of painting the scale edges white so it's like this really light blue and putting black and purple/indigo koi spots. And, as I mentioned in Kailani's thread, I want to paint semi-large rounded scales (way larger than typical but probably a tad smaller than hers). Would the koi design and the large scales look weird? How about the color scheme? Feedback appreciated!