Tez you have pm.
When it comes to oil and spring combinations, the damping should always be adapted to the spring ratio. The suspension should never feel too 'springy' or too slow. Basicly pink/blue springs work well with 40wt oil 3x1.1mm pistons. Maybe up the oil to 45wt wen you change to gold/silver if you want to. Personally I don't think its that necessary, when going from pink/blue to gold/silver, to alter the oil.
As I said give that setup a try and see what you think, but start with 3mm under the links instead of 4mm stated on the sheet.
Cheers,
Phil.