I just bought a bottle of Keto-Diastix yesterday to start testing whether or not I'm in Ketosis (I'm on Atkins and my weight loss seems to have stopped...I got them to help monitor if and when I'm in the weight-loss stage). Anyway, I opened it last night and while I didn't take a direct note of it, I seem to remember the entire sticks (including the result-squares at the bottom) were clear. But when I opened the bottle today, the result-squares at the bottom of the strip I pulled out were colored. I pulled out multiple strips and they are all colored now. Again, I don't remember if the first one was colored or not, but I seem to remember (or at least believe) that it should be clear before I use it. Is that right? I closed the bottle tightly last night after I used it and kept it in a normal, average temperature place with no exposure to light...what would have caused this?