Over the last 2 seasons I must have treid atleast 10 different lines if not more, I have not noticed a big difference when it comes to colour, other then personal preference, I found the Power Pro blue line was to light, even more so when using a camera that lights it up while under water.
As mentioned above the two main things to look for in ice lines are the #LB (for lure action) and its ability to get down fast. I always give the same line advice and that is try as many as you can afford until you get one that you perfer, as it all comes down the personal feel and preference.