Keep in mind that the darker colors are going to absorb more heat...I don't know where you are in Louisiana, but I know that where we are in Northern Louisiana, by mid July my water temps are already in the 90s, and that's with a liner in a fairly light shade of blue, resulting in more of a hot-tub effect. In fact, sometimes during August, it just gets too hot to swim comfortably. For that reason, I would probably steer clear of a darker liner, but it's all really personal preference.