So a fairly under rated gene is the yellowbelly gene. They tend to help maintain a nice rich color in combos. Others that tend to do well are Orange Dream, Fire and enchi combos as well. Pastels tend to brown a bit but as seen above, there are exceptions. Just be sure to shop around for quality animals. I've seen a lot of people jump on "good deals" which helps build collections but not necessarily quality collections. Just an opinion.