Kimbo, they have given you the wrong ones, Diastix test for glucose in your urine, they should've given you ones called Ketostix or you can get others called Multistix (which test for other things at the same time, but are more difficult to interpret). I use Multistix cos I can get them for free from work.
Donnaandjack, any hint of pink on your stick means you're in ketosis, but the darker the pink is, means that you might be dehydrated. It's usually darker if you do it first thing in the morning, and lighter in the evening provided you've had enough fluids during the day. The ++++ is just for medical testing only (Diabetics use these sticks too) , it doesn't matter to the diet whether you have 1+ or 4+'s.
Hope this helps xxx