I would just point out that the clear cups have always been safe. Buying a colored cup is only a vanity issue anyway, and if LadyCup is the best cup for you you can always buy a clear one. LadyCup was the first cup to venture into colors, and also the first cup to venture into non-pink colors. It did well with the PinkCup. I haven't heard of any PinkCups splitting, when they first came out OR now. Probably when they made the other color cups, they used the same formula as they did for the PinkCups, but perhaps the different colors reacted with the silicon differently.
The people whose cups split before the trial all seem to have received a very warm response from the company, and a replacement cup. This sounds like a company who cares.
I wouldn't advise anyone to buy a non pink color cup, especially Lilac or Green (these are the colors I always see people complaining about), but a pink cup and definitely a clear cup is fine.