difference hp 50g black & blue

[aurelio]

(09-28-2014 11:07 AM)peacecalc Wrote:  Hello folks,

only one question:
Is that true that the only difference between the black and blue version is the colour scheme?

If yes, than I've found a seller who sells the blue version about 15 euro cheaper than the the black one.

interesting, but more than the difference should be to know how much.... or there's a function to calculate it?