Hawker Hurricane Mk.I camouflage schemes

[macmullin]

I would like someone to confirm information about early Hawker Hurricane Mk.I camouflage schemes. From what I understand, the “A” Pattern was painted on aircraft that had uneven serial numbers, and “B” Pattern was painted on aircraft that had even serial numbers – is this correct, or was this in the reverse?

Now how long did this “A” and “B” Pattern practice take place?

Did all Hawker Hurricane’s from the factory floor until the Battle of Britain have a silver-white dope painted finish on their under sides?

Thank you in advance :-)