I would consider an amimal with two of the same dominant or co-dominant genes. That way when you breed it, you will always get a morph. With that, any BEL would be nice, Mystic Potion, Silver Bullet, Super-Black Patel or -Cinimon, etc. You can always use the single gene animals these produce to make other neat things, if that's in your future.
In breeding, you'll always want genes to 'yellow' things up. So Supers of these genes are nice to have as well. Genes like Yellow belly, Pastel, Fire, etc.

That's just how I think.

Andy -