The same or a touch lighter?

[happycupcake]

I have had positive OPKs day before yesterday and yesterday, this OPK was taken today with fmu but the dye took an age to clear, like it got stuck. I left it in the bathroom and checked a few minutes ago, a good couple of hours after I dipped it. Instructions say disregard results after 30 minutes but obviously the dye took beyond what is normal to clear, the whole strip was bright pink for ages. Faulty test? If it hadn't done this and I had seen this within the timeframe, would you say this is the same as the control or a little lighter? I can't tell, in some lights it looks the same but in others it looks lighter