[clogger]

I'm not sure about the half and half thing, but like someone already said it's probably a product error.

One thing for me and Ketostix is I don't worry about the color. I test, I look for any color change, and then I toss it. As long as I see any color change I know I'm in ketosis. I never worry whether is dark or light. As long as it changes I know I'm burning fat for energy!