Where can I get proper/official/correct paint?

[Cloud]

As it says in the title, I'd like to do a bit of colour coding, but I'm not sure where is best to try and get "the good stuff" from, the proper BMW Alpinweiß II paint that'll be a perfect match for the original paint, that comes in an aerosol can or other easy application method, if possible. Is there such a thing I can buy, and from where? Or do I have to go to a paint shop and get it matched? Thanks.

[georob]

Got mine from the dealer mate

Or you could try Halfrauds to paint match, never thought much of the spray cans supplied though