Can someone please remind me (in simple terms) how you can tell if black and white pups will change to roan?  Is one dominant over the other in genetic terms?  I know I have read somewhere some complicated instructions for the colour change of the pads, but I can't seem to track the info down now.

I'm confused and one day feel they will be roan like mum then one day am convinced they will be B&W!  Currently there are spots of black randomly on pads.

Blue roan is dominant over black & white but you can get both colours in the same litter which makes things interesting :-) Generally, black & whites stand out as they are always very pink around the muzzle when born & you're right, the foot pads will have pink & black patches whereas blues have all black foot pads. Sometimes it takes a few weeks for the pads to go completely black. In one of our last litters, we had a dog I thought was a black & white until he was about 5 weeks old when his feet pigmented over & more ticking started to appear on his body - just as well we don't send off the registrations too early ;-)

Jane